Systems and methods for providing valid responses to requests for quotations are provided. In one embodiment of the invention, a system according to the invention preferably includes a server. The server includes a server storage device and a server processor connected to the server storage device. The server storage device preferably stores a server program for controlling the server processor. The server processor is preferably operative to receive a request from a requesting participant for a market-validated offer to sell an item; receive an offer price from a responding participant in response to the request; and provide a bid to an electronic marketplace, the bid including a price that is lower than the received offer price.