Abstract: A computer system-implemented method comprises using a process in execution on a processor of a computer system to access, from a database and/or from product information pages on a first retailer's e-commerce site, product description information and pricing information for a product sold by the first retailer. Using a robot module, product description information and pricing information for a non-identically identified product that is offered for sale by a second retailer is accessed via an electronic communication network. Product matching rules with parameters that are adjustable by product are implemented and accessed to automatically determine whether or not an exact feature match exists between the product and the non-identically identified product. Upon determining an exact feature match, a data output linking the product and the non-identically identified product is generated automatically, the data output for being accessed by a price comparison process.