METHOD, DEVICE, AND SYSTEM FOR PROVIDING RANDOM ADDITIONAL POST-PAYMENT DISCOUNT FOR ELECTRONIC COMMERCIAL TRANSACTION IN OPEN MARKET

摘要

The present invention relates to a method, apparatus and system for providing a random additional post-payment discount for electronic commercial transactions in an open market, and particularly to a method, apparatus and system for providing a random additional post-payment discount of 1% to 100% of the initial payment amount after the purchase price has been paid when you select one or more products for purchase in an online open market where virtual sales space is offered to unspecified number of sellers.