Abstract: Prospective suppliers competing in an auction format to fulfill a requisition receive assistance in responding to the requisition over a computer network. A plurality of bids responsive to the requisition are received from at least one prospective supplier. At least one initial winning bid is selected from the received bids that at least partially satisfies the requisition. Using the received plurality of bids, at least one proposed bid is determined that, if adopted by a prospective supplier, would constitute a new winning bid. The proposed bid is made available to at least one prospective supplier that had not previously submitted a winning bid.

Abstract: Prospective suppliers competing in an auction format to fulfill a requisition receive assistance in responding to the requisition over a computer network. A plurality of bids responsive to the requisition are received from at least one prospective supplier. At least one initial winning bid is selected from the received bids that at least partially satisfies the requisition. Using the received plurality of bids, at least one proposed bid is determined that, if adopted by a prospective supplier, would constitute a new winning bid. The proposed bid is made available to at least one prospective supplier that had not previously submitted a winning bid.