Patent ID: 7693750

Claim:
A method implemented by a comparison service for comparing terms to describe a transaction, the method comprising: receiving, for a plurality of sellers of time sensitive fixed capacity non-physical goods, a plurality of purchase information describing a transaction associated with each of the plurality of sellers, the purchase information comprising list price, taxes, and purchase terms; aggregating the plurality of purchase information in a database; standardizing a first purchase information and a second purchase information in response to a query for the first purchase information for a seller of non-physical goods; and providing to a computer of a shopper the standardized first purchase information with the standardized second purchase information for display in a first window of a browser while simultaneously displaying in a second window of the browser a web page of a third-party web site that includes the first purchase information by downloading an application from a web site of the comparison service to the computer of the shopper, wherein the computer configured with the downloaded application: automatically detects when the shopper is visiting a third-party web site that offers goods compared by the comparison service; upon such automatic detecting and upon receiving from the shopper a request for comparison of purchase information relating to the first purchase information, submits to the comparison service a request to obtain purchase information relating to the first purchase information; and in response to submitting the request, receives from the comparison service the standardized first purchase information and the standardized second purchase information; and displays in the first window the standardized first purchase information and the standardized second purchase information.