A description language providing a hierarchical data structure that includes a public portion, hierarchically storing product information including identification of the product and standard and optional features desired for the product. The data structure further includes a private portion for secure storage of customer information. The discloser includes a system comprising a server with a product database, an intermediary subsystem, and a seller subsystem. A product is configured which stores the configured product and features in the data structure. A request for quote (RFQ) is transmitted, with the data structure, to sellers in the customer's geographic area, based on a comparison of product features with sellers stock. Quotes are returned from the sellers in response to which the customer sends an acceptance of a quote to the appropriate seller. While the invention is applicable to any product available in multiple configurations, specific embodiments are directed to vehicle implementations.