A computerized system collects used vehicle data regarding vehicles available for sale from numerous sources (e.g., as from a vehicle auction system), and modifies and supplements such vehicle data for presentation to the consuming public in a searchable manner such that a single entity (e.g., a specific dealer) can offer all of the vehicles for sale to consumers while accounting for the various costs that will be incurred by the selling entity to successfully complete the sales transaction. The system may include interactive functionality with CRM systems to facilitate customer communications.