Forgive the multiple posting, but
here is an example of the type of site I wish to set up. These retailers all sell kettles, and this site allows you to compare the kettles and the retailers, sorting by brand, price, specification etc. How does the site make money, apart from one ad on the right, and some sponsored links at the bottom? Does the site charge the retailers a fee per listing? Is there additional income arising out of the click throughs and sales made via this site?