ebay Amazon comparison tool by ebay seller id

Hello, I want a tool similar to profitscraper.com. It should give result from ebay by searching by user id, then Give the tool users the results of the ebay items found in search compared to the same item on Amazon product . I want it to know to sort the result by ebay categories (e.g. Home and Garden, pets, etc.), also it should alert on items that can be counted as Vero items (by checking from item Vero list) and items that are problematic on ebay (e.g. weapons, medicine etc.) - eventually it should give the tool's users an excel spreadsheet - in csv for that can be compatible to Turbo Lister, and most importantly give a column that will give Amazon's to each item the user decide to download to the spread sheet.. It ahould be designed nicely and esthetic. It should be used by many members. I would rather to be made by using Amazon's and ebay API's and not by scraping as I want it to be as stable as possible and low maintenance. A possiblity to add more websites that the ebay items will be compared to, like walmart, overstock, etc. price, quantity, my percentage added for profit of what I should sell for (should be able to edit this scrapper for adding percentages) Website and UI should be nicely designed, and contain the following pages: 1. Welcome and explanation 2. sign up and payment by paypal 3. set up - clients details and ebay user id to protect them for scraping their own seller id 4. UI 5. user management only for admin Website should be modular as there will be more apps added later under same domain name Assuming full copyrights and codes will be granted to me. anyone that replies please say the words chicago bulls, otherwise you did not read my project and will be rejected.