As it is well known fact, Amazon.com is the largest store available on to the Internet, to find almost anything. Amazon invites enterprises/individual to become Amazon associates. It means you can be an Amazon Associate and can start selling Amazon products from your own WebSite (StoreFront). You can use your own imagination and preferences to have your own website design and flow of your website.
http://sakshidemo.com/beta/sakshidemobookstore/ = The SakshiDemo Bookstore is a mashup prepared to demonstrate the power of the API discussed above, and how can it be integrated in your design. It allows you to browse all the Books available at Amazon in a very clean and user-friendly way. The payment stuff is handled by Amazon in its secure environment for customer's safety.
As a recent change the Demo BookStore is updated and integrated with Bing search API. The store uses BING's suggestions for the search queries to refine the same, so users can find what they want in well assisted manner.
If you like to have your own StoreFront which can divert additional income to you, feel free to contact us to get a reasonable quote, based on your requirements. The stuff can be customized within the boundaries setup by Amazon.
Best luck to get converted the largest E-commerce segment on the web into addition income source for you.