Daily Deals / Amazon / Ebay Scraper Comparison Tools

I need a socftware to do retail arbitrage. It need to be able to search provided sites to find deals that are profitable to sell on Ebay or Amazon. For example search [login to view URL] It will check the pricing vs Amaozn and Ebay if it show being profitable after fess it would trigger for me to purchase and to sell it. This software will also compare pricing across ebay and amazon to determine what can be purchased cheap and sold for more on the other site. There would have to be parameter for the software to know to search against. Like Price , Category Etc. It could also be something Ebay best seller prices vs Amazon prices to see if it can be found cheaper at amazon to resell on ebay. That is the object to search in mass for the best prices that can be resold for profits. The tools should be automated sending out emails of items that are found to be profitable.(or some type of alert)