| 摘要 |
A computer implemented method for guaranteeing a consumer a best price on an item or service purchased from a vendor in a first transaction at a first time at a first price, the method in certain aspects including storing in a first database data for the first price and information identifying the consumer, inputting at least one later-in-time second price for the item or service, determining, during a predetermined time period, any lower second price for the item, comparing the two prices and calculating a money-value difference therebetween, and refunding to the consumer a refund amount equal to the money-value difference; and, in one aspect, entering the consumer in a contest upon completion of the first transaction.
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