Patent ID: 8671026

Claim:
A computer-implemented system of e-commerce comprising: a computer network; a physical database that structures a collection of data relating a listing module, a trade module, a search module and a rule module; at least one processor that executes the listing module, the trade module, the search module and the rule module; a server that hosts, with at least one processor, a market place website; the listing module that enables an entity to assign a specified value to a good and to list the good for trade on the market place website such that the listing of the good will expire after being posted for a specified period of time; the trade module that enables the entity to trade the good for another good of another entity on the market place website; the search module that enables the entity to search a list of goods on the market place website; and the rule module that governs a trade between the entity and the other entity of the good for the other good such that the entity is able to propose the trade to the other entity wherein the rule module enforces a first rule that the specified value of the good is at least one of an equal value equal to another specified value of the other good and a greater-than value greater than the other specified value, wherein the rule module enforces a second rule that the entity is able to only propose the trade to the other entity once and wherein the rule module enforces a third rule that the entity is not able to alter the specified value of the good once the entity has listed the good.