A method on a server for managing discount offers for a plurality of users over a communications network. The method includes receiving a discount offer, wherein a discount offer comprises at least a product or service description, an initial price, a discount price less than the initial price, a minimum number of acceptances and a time deadline, and transmitting the discount offer to the plurality of users. The method further includes receiving acceptances of the discount offer, and executing a preliminary credit card authorization transaction for each acceptance received, at the initial price. The method further includes calculating a number of acceptances, detecting the time deadline, and effectuating a sale of the product or service at the discount price to each user that accepted, if the number of acceptances is greater than or equal to the minimum number of acceptances, including executing a final credit card authorization transaction.