Patent ID: 7577584

Claim:
A method for implementing market transactions among a plurality of buyers and sellers, the method comprising: sending bids from the buyers and sellers to a central market computer system; processing the bids by the central market computer system; wherein the processing comprises determining by the central market computer system matches between the buyers and sellers, and computing by the central market computer system a price range for each of the matches, wherein the price range comprises a lower bound of the price range and an upper bound of the price range wherein the central market computer system does not compute a final price for a transaction; and communicating results of the processing by the central market computer system to the buyers and sellers; wherein communicating the results comprises communicating by the central market computer system to the buyers and sellers the matches between the buyers and sellers and the price range for each of the matches; whereby the communicated price ranges for the matches enable matching buyers and sellers to bargain on a final price for a transaction.