KR20030048264A - Method and System for Establishing a Proper Bid Price for Goods in Real Time - Google Patents

Abstract

The present invention relates to a product fair price real-time successful bidding method and system for winning the price of a predetermined quantity in an e-commerce starting from the highest price and falling according to a correlation variable between time and quantity sold at the time of end of sale.

According to the present invention, after auctions are invited to a plurality of clients connected to a sales server through the Internet to advertise within a limited time for a specific product, the product is reduced by selling the price of the specific product in real time over time. A method for real-time successful bidding of a proper product price for auctioning, comprising: (a) setting a set selling quantity, a selling maximum price, a selling minimum price, and an auction time limit for the specific product to be auctioned, and (b) a plurality of accessing the selling server Providing a client with a sales advertisement for auctioning the specific product for a predetermined time; (c) accepting a bid while decreasing the price of the specific product at a predetermined time interval while counting a time limit; and (d) Accumulating the number of clients responding to the changed price range at each time interval, (e) the specific product Determining a successful bid price, (f) selling the specific product at the successful bid price after the time limit elapses, and (g) executing payment for the specific product sold; A real-time bidding method for product fair prices is provided.

Therefore, according to the present invention, not only can give a large number of clients the opportunity to purchase a product at a low price through a temporary auction in the Internet e-commerce, but also increases the willingness to purchase the product according to the price drop, and a fast time for the seller. There is an effect that can end the sale of goods within.

Description

Method and System for Establishing a Proper Bid Price for Goods in Real Time}

The present invention relates to a method and system for real-time successful bidding of a commodity price, and more specifically, to a price at a time point at which the sale ends by lowering a commodity price of a predetermined quantity in an e-commerce based on a correlation variable between time and sales quantity. The present invention relates to a method and system for real-time successful bidding of a fair price of a product.

Electronic commerce is a transaction in which all or part of a transaction of goods or services is processed electronically through electronic document exchange. E-commerce is similar to commerce in the real world, where all entrepreneurs are involved. Examples of the use may include cyber malls, auctions, reverse auctions and joint purchases.

Cyber Mall, the most common form of electronic commerce, is a virtual department store that runs over the Internet. A typical e-commerce site is Amazon (http://www.amazon.com) in the United States, and various information about products and products to be sold on the Internet site are posted by buyers using the information posted. It is a form to buy. At this time, as a method of paying the cost of goods purchased by the buyers, Giro paper or a credit card is used.

Another form of electronic commerce is auction. The general concept of an auction is a way for a seller to specify an initial desired selling price for a particular product and, in most cases, change the purchase price, which is changed by the competition of the buyer in a certain way, to determine the final selling price.

In contrast, reverse auction or Dutch auction is a concept opposite to the auction described above. In other words, when a buyer proposes a purchase price for purchasing a product, the seller competes among sellers who want to sell the product, gradually lowers the selling value of the product, and finally, the product of the seller who proposes the lowest price is successful and the purchase is made. Similarly, as in the case of US Priceline (http://www.priceline.com), a buyer can purchase a product at this price when the buyer provides a desired price.

The general auction method, which is a seller-centered selling method rather than a buyer, may be advantageous to the seller because the winning price is gradually increased, but the buyer has a disadvantage in that a lot of time should be invested in order to receive the winning bid.

On the contrary, the reverse auction method, which is a buyer-centered sales method rather than a seller, may be advantageous to buyers because they present their desired products and prices, but the sellers may compete to sell their products, and therefore, at a relatively low price. The disadvantage is that a transaction can be established.

Therefore, there has been a demand for a new auction and reverse auction method that satisfies both buyers and sellers, but not in an advantageous manner such as buyers and sellers, but this has not been provided yet.

In order to compensate for the above disadvantages, the present invention, in the e-commerce of the commodity auction method, by setting a certain selling time and starting from the highest price of a predetermined quantity of goods by dropping in accordance with the correlation between the time and sales volume, the sale is finished The object of the present invention is to provide a method and a system for real-time successful bidding of a fair price of a product.

According to an object of the present invention, after inducing a participation by advertising auctions within a time limit for a specific product to a plurality of clients connected to the sales server via the Internet, the sales price of the specific product decreases in real time over time. A method for real-time successful bidding of a product for auctioning a product, the method comprising: (a) setting a set selling quantity, a selling maximum price, a selling minimum price, and an auction time limit for the specific product to be auctioned; and (b) accessing the selling server. Providing a plurality of clients with a sales advertisement that auctions the particular product for a certain time period, (c) accepting a bid while counting a time limit while decreasing the price of the specific product at regular time intervals, (d Accumulating the number of clients responding to the changed price range at each predetermined time interval; Determining a successful bid price for the product, (f) selling the specific product at the successful bid price after the time limit elapses, and (g) executing payment for the specific product sold; A real time bidding method for a fair price of a product is provided.

According to another object of the present invention, after inducing the participation by advertising the auction within the time limit for a specific product to a plurality of clients connected to the sales server via the Internet, the sale price of the specific product in real time over time In the real-time successful bidding system for auctioning a product by dropping, the Internet, which is a network for remotely distributed computers to send and receive data, and the best and lowest prices of a commodity required to execute a real-time bidding function Key input unit for setting and setting quantity, auction time limit, price change amount, setting quantity setter for setting quantity of goods to sell, timer for setting auction time limit and counting the time limit, price for each fixed time A price change setter that sets the amount of declining A bid amount accumulation counter that counts a cumulative quantity of bid products when a product is sold, a network interface card connected to the Internet and executing an interface for connecting to a plurality of clients, and a commodity at the time of bid Display price and commodity price at the end of the auction, data input from the key input unit, memory for storing data input through the NIC from a plurality of clients, system operation status, and specific product real-time auction status on the screen A sales server including a screen output unit configured to control an entire apparatus for executing a product optimum price real-time successful bidding function based on data input from the key input unit and a plurality of clients, and the sales server connected to the sales server. According to the auction method provided by It includes a plurality of clients to purchase a product at a price priced within a limited time and pay for the product, wherein the sales server is the information and the specific information about the specific product to sell to a plurality of clients connected through the Internet Induce the client's participation by advertising the special auction that the product is sold for a limited time within a limited time, and set the maximum price, the lowest price, and the special time limit of the specific product, and then decrease the selling price in real time after a certain period of time. By receiving the client's bidding and executing the special auction to provide a real-time bidding system for a product suitable price, characterized in that for the sale of the particular product at a successful price.

1 is a block diagram showing the configuration of a product reasonable price real-time successful bid system;

2 is a block diagram showing an internal configuration of a sales server;

3 is a flowchart illustrating a method for real-time successful bidding of a commodity fair price according to an exemplary embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110: Internet 120: Sales Server

130: buyer client 140: sales database

150: financial settlement system 210: key input unit

220: set quantity set 230: timer

240: price change set unit 250: bid quantity cumulative counter

260: memory 270: screen output unit

280: control unit

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a system configuration for explaining a method for real time successful bidding of a commodity fair price according to an exemplary embodiment of the present invention.

In accordance with the present invention, the product fair price real-time successful bidding system provides product information to the Internet 110, which is a network for transmitting and receiving data between computers scattered in remote areas, and a plurality of clients connected through the Internet 110. In addition, the sales server 120, which sells a product at a price that is sold within a limited time by lowering the price based on a correlation variable between time and sales quantity with a limited time, is connected to the sales server 120 and the sales server 120 According to the auction method provided by), a plurality of buyers clients 130 and bidders who bid within a limited time, purchase a product at a winning price, and pay a product price of the product sold by the sales server 120 In cooperation with the sales database 140, the sales server 120, which stores information and product transaction history, a credit card is issued and It consists of a financial settlement system 150 that manages the account and checks the credit status of the buyer to determine whether to approve the transaction.

In the present invention, the term "connection" means physically touching, and "connection" is used as meaning not only physically but also signally.

2 shows an internal configuration of the sales server 120.

The sales server 120 inputs and sets a key input unit 210 for setting and setting the highest price and lowest price of a specific product, a sale quantity, an auction time limit, a price change amount, and the like, in order to execute a real time bidding function of a suitable product price. Set quantity setter 220 to set the set, auction time limit set time limiter 230 to set the time limit, price change setter 240 to set the fall of the product selling price every fixed time, goods through the auction A bid quantity accumulation counter 250 that accumulates the number of clients who have bid on a specific product when a sale is executed, and a network interface card 250 connected to the Internet 110 to execute an interface for connection with a plurality of clients. (Hereinafter referred to as NIC), the product price at the time of the auction and the product price at the end of the auction, the data input from the key input unit 210, the buyer Screen output unit for outputting the memory 260 for storing the data input through the NIC 250 from the plurality of clients including the client 130, the operating state of the sales server 120 and the real-time auction status of the specific product on the screen 270, and a control unit 280 that controls the entire apparatus to execute the product proper price real-time bidding function based on the data input from the key input unit 210 and the plurality of clients.

Subsequently, based on the product fair price real-time bidding system configured as described above will be described in detail with respect to the product fair price real-time bidding method according to the present invention.

3 is a flowchart illustrating a method for real-time successful bidding of a commodity appropriate price according to an exemplary embodiment of the present invention.

First, a plurality of buyer clients 130 are connected to the sales server 120 by executing a web browser, although not shown to access the sales server 120 through the Internet 110. Since the process of the client accessing the server through the web browser is a general technical matter, a detailed description thereof will be omitted.

The sales server 120 introduces a website to a plurality of connected buyer clients 130 and provides an initial screen including a product sale information and a plurality of menus (step S302).

Here, it is assumed that the buyer client 130 among the plurality of clients connected to the sales server 120 is a client that is willing to purchase some of the products sold by the sales server 120.

The buyer client 130 selects a desired menu from among a plurality of menus displayed on the provided initial screen, and the sales server 120 provides a service corresponding to the menu selected by the buyer client 130 to the buyer client 130. .

In addition, the sales server 120, the administrator using the key input unit 210, for a specific product, such as "64M RAM," the highest selling price 10,000 won, the lowest selling price 8,800 won, auction time limit 1 minute and price In addition to inputting the time interval of 10 seconds the change occurs, the price change amount 200 won and the sales quantity 100 is set by entering (step S304).

The controller 280 of the sales server 120 may set the set quantity setter 220 to sell 100 units based on the highest selling price, the lowest selling price, the auction time limit, the selling quantity, and the price change amount input from the key input unit 210. , The timer 230 sets an auction time limit of 1 minute, and the price change setter 240 controls to set 200 won as the fall of the selling price, and the highest selling price and the lowest selling price of the specific product are stored in the memory 260. Will be saved).

The sale price for a particular product that is auctioned may be displayed only the highest price through a web page, and the lowest price may be recognized only by the sales server 120 and not displayed on the web page.

The sales server 120 provides a service corresponding to the menu requested by the buyer client 130, and all clients connected to the sales advertisement that the sales server 120 auctions only for a certain period of time for a specific product to be sold are sold. Present in the web page you are viewing (step S306).

For example, if the purchaser client 130 is receiving the web service around 3 pm, the advertisement is sold as "100 64M RAM (minimum 9,000 won), sold as a limited auction for 1 minute from 3:10 pm". To provide.

The sale advertisement is composed of a pop-up screen linked to a web page for auctioning a sale of a specific product, and a sale advertisement that is displayed as a pop-up screen for the purchaser client 130 to purchase the specific product. If you click, the web page shown to the buyer client 130 is moved to a web page that sells a particular product in the form of an auction.

In other words, when the buyer client 130 wants to purchase a product after seeing the sale advertisement while receiving the web service, the buyer client 130 clicks the product advertisement to move to the web page for auctioning the sale of the specific product. do.

The web page for the auction of the sale of a specific product is a window for viewing the image and description of the product in the auction, the status of a number of clients participating in the auction, the window for viewing the status of the clients participating in the auction, auction It includes a window where you can see the progress, the highest price of a particular product, the bidding status for the changed price range, and the winning bid price at the end of the auction.

Subsequently, the controller 280 counts the time by controlling the timer 230. When the time promised to be auctioned to the clients, ie, 3:10 pm, the controller 280 executes the real time bidding function of the product, the auction is executed. Done. The controller 280 controls the apparatus as a whole to execute the product fair price real-time bidding function.

Under the control of the control unit 280, the timer 230 counts a limited time of 1 minute, and the control unit 280 has a predetermined time interval based on the time count of the timer 230, for example, as shown in Table 1 below. As described above, the selling price of 200 won set by the price change setter 240 is reduced every 10 seconds to the screen output unit 270 (step S308). In other words, the auction starts from the highest selling price of 10,000 won and then drops the product price by 200 won every 10 seconds such as 9,800 won, 9,600 won, 9,400 won, and 9,200 won.

Table 1 shows the price schedule changes according to the time limit.

Elapsed time (sec) 0 10 20 30 40 60 Current price (KRW) 10,000 9,800 9,600 9,400 9,200 9,200 Cumulative Bid Amount () 0 10 30 60 100 100 Bid Change 0 10 20 30 40 0 Bid Change Rate (times / sec) 0 One 1.5 2 2.5 0 Price drop rate (KRW / sec) 0 10 10 10 10 0 Remarks The highest price Auction completed

When 10 seconds have elapsed since the start of the auction over time, when 10 buyer clients 130 who want to purchase a specific product among a plurality of clients respond to purchase a total of 10 products, each one (step S310), The control unit 280 of the sales server 120 temporarily stores the selling price at the time when the buyer client 130 makes a bid, that is, 9,800 won and 10 bid quantities in the memory 260 (step S312).

While the time is continuously counted by the timer 230, when the new bid amount is input, the bid amount accumulation counter 250 accumulates the bid amount newly input to the ten bid amounts stored in the memory 260. do.

The controller 280 may accumulate and set a cumulative amount of bids each time the bid amount is accumulated in the set quantity setter 220 and the bid quantity accumulation counter 250 while the timer 230 counts the time limit of one minute. It is determined whether this is matched (step S314).

That is, 10 quantities of the current bid quantity accumulation counter 250 and 100 pieces set in the set quantity setter are compared, and if the values are different, the time limit is continuously counted to determine whether the 1 minute time limit has not ended. (Step S316). If the time limit has not yet expired, the process returns to step S308 and the auction is carried out while counting the time limit while decreasing the product price at a fixed time interval (10 seconds).

After the one-time bidding, if there is no more bidding in step S316 and the one-minute time limit ends, the controller 280 determines the selling price at the lowest price originally suggested, that is, 9,000 won and waits for about 5 hours. Waiting for 10 seconds to end the auction (step S318).

However, if the time limit does not end and the auction is executed while counting the time continuously and 20 bids are made by the time 20 seconds elapse as shown in Table 1, the bid quantity accumulation counter 250 is newly added to the 10 previously accumulated 20 counts. The dogs will accumulate to a total of 30 pieces. The controller 280 compares the quantity of 100 items set in the set quantity setter 220 with the accumulated quantity of accumulated bids on the quantity accumulated counter 250 and does not equal, so that the time limit is continuously counted and the auction is continued. Proceed.

If the time limit is one minute from the start of the auction, if the one minute time limit has not expired, the controller 280 returns to step S308, counting the time limit, and sets the product price by 200 won every 10 seconds until the time limit expires. Proceed with the auction.

In this manner, as shown in Table 1, when 30 clients elapse in 30 seconds and 40 clients in 40 seconds elapse, the cumulative amount of bids accumulated in the bid quantity accumulation counter 250 becomes 100, and the control unit ( 280 recognizes that the bid quantity accumulated in the bid quantity accumulation counter 250 is equal to the quantity set in the set quantity setter 220 and ends the auction, that is, the price when the sale set amount and the cumulative bid amount are the same; The selling price of the specific product is determined at 9,200 won (step S320).

That is, the control unit 280 is set to accumulate and set each time the bid amount of the product and the bid quantity accumulation counter 250 set in the set quantity setter 220 while the timer 230 counts the time limit 1 minute It is determined whether the quantity matches, and accumulates each time at the time when the bidding is completed even before the time limit of one minute elapses, that is, the quantity of goods set in the set quantity setter 220 and the quantity of bid accumulation cumulative counter 250. The auction will be terminated when the set bid amount matches.

On the other hand, even if the timer 230 counts one minute of the time limit, and one minute has elapsed, the controller 280 may set the quantity of goods set in the set quantity setter 220 and the amount of bids accumulated every time on the counter 250. If the cumulative bid amount does not match, the price of a specific product is sold at the sale price at the end of the time limit.

As can be seen from Table 1, it can be seen that the price decreases by 200 won every 10 seconds after a certain time interval, and 10 quantities were bidted in 10 seconds after the auction began, and 20 quantities after 20 seconds After 30 seconds, 30 quantities were sold, 40 seconds after 40 quantities, and 100 items were supplied. The auction was ended 40 seconds after the auction began, and the sale price of a specific product was 9,200 won. It can be seen that the successful bid.

When the auction ends, the sales server 120 sets the selling price at a price of 9,200 won at the time of the successful bid, as shown in Table 1, to sell the product. Therefore, within 40 seconds of starting the auction, other clients can purchase the product at the price of 9,200 won.

On the other hand, Table 2 shows the change in price changes over time.

Elapsed time (sec) 0 10 20 30 40 60 Current price (KRW) 10,000 9,700 9,550 9,450 9,380 9,380 Cumulative Bid Amount () 0 10 30 60 100 100 Bid Change 0 10 20 30 40 0 Bid Change Rate (times / sec) 0 One 1.5 2 2.5 0 Price drop rate (KRW / sec) 0 30 15 10 7 0 Remarks The highest price Auction completed

Looking at the bidding trend shown in Table 2, it can be seen that the purchase desire (low bidding rate) is low because the price is high at 10,000 won at the start of the auction. Therefore, in order to increase the desire for purchase, the price is reduced to 7,000 after 10 seconds, more than Table 1 after the same time. At this time, 10 clients bid and the bid quantity accumulation counter 250 accumulates 10 bid quantities and the price drop rate is 30. After 10 bids, the next 20 seconds, the price decrease rate is reduced to 15, which is half that of 10 seconds, and the selling price is reduced to 9,550 won. Subsequently, 30 clients responded and 60 were accumulated, and the price declined to 10 at 9,450 won. As 40 seconds elapse, 40 clients respond and the rate of change in the bid increases. In contrast, the price declined to 7,380 won. In other words, it can be seen that the price change rate decreases while the bid change rate continuously increases due to the increase in purchase desire. As the price decreases, the desire to purchase increases, so the bidding rate increases. If the price falls to an appropriate level, the desire to purchase increases and thus the price drop rate decreases.

The controller 280 ends the auction after 40 seconds when the cumulative bid amount of the bid quantity accumulation counter 250 and the set selling quantity of the set quantity setter 220 coincide with each other for 40 seconds, and the selling price is terminated. Price of 9,380 won will be successful.

When the selling price is determined in this manner, the purchaser client 130 starts the purchase by clicking the "buy" button for the specific product for which the selling price is determined. When the purchaser client 130 who wants to purchase the product clicks the "buy" button for the specific product, the sales server 120 receives the purchaser information and payment and delivery information for the payment of the product, The sale is executed (step S322).

The purchaser's name, address, contact information, selection of a payment method for payment of goods, and input of goods price are stored in the sales database 150 through the screen for inputting the buyer information and payment and delivery information. In addition, the payment information, that is, the selection of the payment method for payment of the goods, the data for the input of the goods price is transmitted to the financial settlement system (160).

On the other hand, if no one bids until the end of the auction, the sales server 120, once again for a certain time auction for a certain product to provide a sale advertisement to all clients connected to them.

That is, according to an embodiment of the present invention, after the sales server advertises a particular product for a predetermined time to a plurality of clients viewing a web page, the auction server participates in an auction participation, and then the highest price, lowest price, and auction of the specific product to be sold. It is possible to implement a method and system for real-time successful bidding of a fair price of a product for setting a time limit, a quantity sold, etc., dropping a product price at a predetermined time, receiving a client's bid, executing an auction, and then selling the product at a successful price.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments and can be variously modified and changed without departing from the technical gist of the present invention.

As described above, according to the present invention, not only can give a large number of clients the opportunity to purchase a product at a low price through a temporary auction in the Internet e-commerce, but also increases the willingness to purchase the product according to the price drop, It has the effect of ending the sale of goods in a short time.

Claims (13)

Promote participation by advertising auctions within a time limit for a specific product to a large number of clients connected to a sales server through the Internet, and then drop the selling price of the specific product in real time over time to auction the product. In the price real-time bidding method, (a) setting a set selling quantity, a selling high price, a selling low price, and an auction time limit for the specific product to be auctioned, (b) providing a sales advertisement to a plurality of clients connected to the sales server to auction the specific product for a predetermined time; (c) accepting a bid while counting a time limit while decreasing the price of the particular product at regular time intervals, (d) accumulating the number of clients responding to the changed price range at the predetermined time intervals; (e) setting a winning price for the specific product; (f) selling the specific product at the successful bid price after the time limit elapses; (g) real-time successful bidding method for a product, comprising the step of executing a payment for the specific product sold. The method of claim 1, The selling advertisement of step (a) is a product fair price real-time bidding method, characterized in that the client is linked to the web page to auction the particular product for the current web page. The method of claim 1, The step (c) is a method for real-time successful bidding price, characterized in that the bidding while accepting the bid price while decreasing the price of the specific product at a predetermined interval every time interval counting. The method of claim 1, The step (c) is a method of real-time successful bid price, characterized in that the bidding while accepting the bid price while decreasing the price of the specific product at intervals that are inversely proportional to the bidding rate at a predetermined time interval. The method of claim 1, The step (e) is a product auction price real-time successful bid method, characterized in that the auction is terminated when the set sale quantity and the cumulative bid quantity of the specific product. The method of claim 1, In the step (e), the successful bid price is a product optimum price real-time successful bidding method, characterized in that the price set at the time when the sale set quantity and the cumulative quantity of the specific product within the time limit. The method of claim 4, wherein In the step (e), when the cumulative quantity by the time limit does not coincide with the sale set quantity, the successful bid price is determined by the price at the end of the time limit. . The method of claim 2, The web page for auctioning the sale of a specific product is a window for viewing the image and description of the product attached to the auction, the status of a number of clients participating in the auction, a window for viewing the status of the clients participating in the auction, auction A real-time successful bidding method for a product, comprising: a window for viewing the progress, a peak price of a specific product, a bidding status for a changed price range, and a bidding price status at the end of the auction. Promote participation by advertising auctions within a time limit for a specific product to a large number of clients connected to a sales server through the Internet, and then drop the selling price of the specific product in real time over time to auction the product. In the price real-time bidding system, Internet, which is a network for transmitting and receiving data between computers scattered in remote areas, Appropriate price of the product Key input unit for inputting and setting the highest price and lowest price of the product required to execute the real-time successful bidding function, quantity, auction limit time, price change amount, set quantity setter to set the quantity of the product to be sold, auction limit A timer that sets a time and counts a time limit, a price change setter that sets a falling amount of the price every fixed time, a bid quantity accumulation counter that counts a cumulative quantity of the products that have been won when the sale of the product through an auction is executed, A network interface card connected to the Internet and executing an interface for connecting to a plurality of clients, a product price at the time of a bid and a product price at the end of an auction, data input from the key input unit, Store data entered through the NIC from multiple clients Memory for the display, a screen output unit for outputting the real-time auction status of a particular product on the screen, the overall device is controlled to execute the real time bidding function of the product price appropriately based on the data input from the key input unit and a plurality of clients Sales server having a control unit, Including a plurality of clients connected to the sales server to participate in the auction according to the auction method provided by the sales server to purchase a product at a price that is won within a limited time and to pay for the product price, The sales server advertises a client's participation by advertising the auction indicating that the specific product to be sold and the specific product are sold for a limited time to a plurality of clients connected through the Internet. After setting the highest price and the lowest price of the auction and the time limit of the auction, in real time, the sales price is lowered every time elapsed, the client receives a bid and executes the auction to sell the specific product at the winning price. Real time successful bidding system. The method of claim 9, The sales server is a real-time successful bid price system, characterized in that to receive a client's bid by constantly lowering the selling price every time elapsed in real time. The method of claim 9, The selling server is a real-time bidding system, the product price, real-time bidding system, characterized in that to receive a client's bid by decreasing the selling price at intervals varying inversely proportional to the bid rate in real time. The method of claim 9, The product advertisement price real-time auction system, characterized in that the product advertisement related to the auction that the limited sale of the specific product is linked to a web page for the sale of the specific product. The method of claim 12, The web page for auctioning the sale of a specific product is a window for viewing the image and description of the particular product to be auction, the status of a number of clients participating in the auction, and a window for viewing the current status of clients participating in the auction , A window for viewing the auction progress status, the best price of a particular product, the current bid price status of the changed price, and the contents of the successful bid price status at the time the auction is finished, characterized in that the real-time bidding system.