Abstract: A time-restricted product sale promotion system includes a promotion platform, at least one seller system, at least one buyer system and a promotion management unit. A time-restricted product sale promotion method includes: providing a time-restricted degressive mechanism on the promotion platform and connecting with a real-time price reporting system to generate a real-time price reference; a seller utilizing the mechanism to calculate optimum degressive sale prices within a restricted promotion time interval and sending the optimum degressive sale prices and the real-time price reference to a buyer; the buyer sending a purchase order to the promotion platform according to the promotion price; comparing the promotion price with the purchase order; displaying a bargain information on the promotion platform if the purchase order is verified.

Abstract: A time-restricted product sale promotion system includes a promotion platform, at least one seller system, at least one buyer system and a promotion management unit. A time-restricted product sale promotion method includes: providing a time-restricted degressive mechanism on the promotion platform and connecting with a real-time price reporting system to generate a real-time price reference; a seller utilizing the mechanism to calculate optimum degressive sale prices within a restricted promotion time interval and sending the optimum degressive sale prices and the real-time price reference to a buyer; the buyer sending a purchase order to the promotion platform according to the promotion price; comparing the promotion price with the purchase order; displaying a bargain information on the promotion platform if the purchase order is verified.