An exchange system for facilitating the purchase of products is described. The system is coupled, in one embodiment, to a communications link. Potential product purchasers and sellers may access the exchange system via the network, and submit offers and/or pricing requests to such system. In response to the requests, the system processor retrieves the stored data from the respective databases, and causes such data to be transmitted to the local site for display. The exchange systems also executes certain functions in response to commands and data transmitted from buyer sites, seller sites and institution sites.