Abstract: A method and system for managing and evaluating commodities purchasing over a network of distributed computing devices. In one embodiment, the method allows a plurality of buyers to generate one request for quote and, response to the request for quote, receive a quote from plurality of vendors. The system of the present invention provides a price normalization routine that allows buyers to evaluate and compare a normalized price for commodity products having different evaluation parameters. In an arrangement comprising a plurality of computers connected to a network said plurality of computers including at least one server, at least one buyer client computer and a plurality of seller client computers, the method for providing commodities exchange services first provides a web-based browsable display describing at least one commodities exchange service. The system then receives at least one request for quote from the buyer.