Craigslist, Ebay, Amazon Comparison Tool

I would like a script for a UNIX(MySQL, PHP) server that performs that following duties: -Display craigslist "FOR SALE" results for a specified City with image, Ebay "completed items" price, and Amazon price if available. -The script would need to grab the pricing information(for comparison) from within the post first than from the title second if post price is not available. -The script would need to scan for the words,new, used, like-new in the craigslist Ad and subsequently find either new, used, like-new in the ebay "completed items with at least 1 bid". -The script would allow for email alerts for a items which meet a specified price difference in the craiglist vs. ebay price. -Each craigslist result title, price, ebay price(High and Low) w/ link to results, amazon price with link, craigslist picture, would all need to be in a single row.