Price Comparison Software Amazon vs Ebay

I need a very simple software that will take [login to view URL] marketplace as the basis and compare prices on Amazon with the prices on eBay. Here is the basic structure of the procedure: Overall Flow of the software 1. I should be able to choose a category or sub category in [login to view URL] e.g. Electronics or e.g. Electronics->Home Audio 2. Then the software should look through the first N items which are sorted according to the bestselling criteria of [login to view URL] (N will be an input parameter) and these N items will also be filtered according to: 2-i. Price Range (e.g. 50-100) 3. Through this procedure the software should obtain the price of the item (where this price will be the lowest featured merchant price for a NEW item) 4. And the UPC or EAN of the item 5. Then the software should lookup this UPC or EAN under eBay and find the first N lowest priced Buy it Now offers (only for Brand New offers) 6. The result of all this work should be presented in a tab delimited (or spreadsheet format) format with column headers Item Name Item UPC Item EAN Item ASIN Item Amazon Price Item Ebay Price-1 Item Ebay Price-2 Item EbayPrice-N Item Amazon Link Item Ebay Link-1 Item Ebay LInk-2 Item Ebay Link-N Although I have limited experience with programming I assume that this should be a simple and fast project, You will be paid promptly. I would appreciate a simple easy to use GUI, and other user friendliness or other clever options besides the simple flow I have presented. Thanks for reading.