There is tuff comp. out there. You may want to sign up with Pricegrabber.com. They charge a small final value fee but that is it. And if you are using Paypal IPN then you can redirect back to your site and not Pricegrabber.com.
Your key words are vary important as to which your keywords in the meta tagline need to be on your home page in some fashion. Search engines do not just go by the taglines they also go by the content of the website.
Hope this helps a little.
Bookmarks