datafeedr - WordPress Plug In Customization

We need to get the datafeedr plug in customized for our site. You can see an example site here: [login to view URL] Right now when someone views a product and clicks [buy now] it goes to the affiliate site, which is an outside link. Instead of that happening we like for the person to stay on our site and be taken to a page that thanks the user for adding that product to their shopping cart. The shopping cart does not need to function after that step. It just needs to appear as though it does function. The product title and price should be passed to this secondary shopping cart page. The actual design/formatting can be done by us. You will need to give us a list of files that were modified so we can replicate this mod on other datafeedr sites we may launch in the future. You will be give an ftp login to complete that. If you need phpmyadmin access please let us know ahead of time.