What are considered best shopping comparison sites today? Which ones convert well? (bizrate, shopping, pricegrabber, etc.) What matters the most in providing an effective data feed? (title, description, rating, price) We are looking to submit a 2,000 product feed to one of them in the near future. Our main concern is conversion rate and cost/conv., unless anyone has other thoughts to consider.
Here is a free one you could use ShopMania.com They offer scripts for implementation for various programming systems as well as oscommerce, zencart, virtuemart