Abstract: An example method, set of machine readable instructions stored on a storage device, and computer system, each adapted for determining an acceptable offer price for a product or service are described herein. In the method, a reserve price is set for a desired product or service that is displayed to a user. Upon receiving an offer on the product or service by the user, a given fee may be billed to the user in response thereto. Upon the input of the offer, a determination is made as to whether or not it meets or exceeds the set reserve price. If the offer amount is less than the reserve price, the reserve price is automatically lowered by a given amount, otherwise the offered amount input by the user for the desired product or service is accepted.