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I need an experienced programmer to write a program that can produce regular reports comparing real-time price data across varying sites. I need this program to be able to be able to compare prices of virtually any sku/barcode (from a range of viable barcodes) across the web (or at the very least, across more than 20 different sites) against the price for the same exact same item on one particular site. Once comparisons are made, I then would want those with a particular variance between prices (higher on the one particular site by a particular margin than on the other sites) to be included on a report or in some other way that can be retrieved immediately. I need this program to be able to consistently run and to be able to generate its own list of skus/barcodes without me having to manually input them. Only experienced programmers need respond.