| 摘要 |
A method for deciding sale cost of a keyword advertisement and an auction system using the method are provided to maintain a CPM(Cost Per Millennium) advertised product in a purchasable state before an advertise who shows an initial purchase intention appears. A price decision element for the predetermined advertisement produce is defined(S101), and a sales price of the advertised produce is determined in time unit(S102). The correspondent is bidden to the advertiser at a point of time when the purchase is requested(S103). The prices determination elements include a start price for auction, a bid unit time for declaration for the reduction for start price and a preference price for the unit price. |
