DeluxeDarling.com is a website that sells clothing for women who have gotten breast implants and have trouble fitting into standard sizes. The platform i used is OSCommerce, one of the worlds largest Open Source (free software collaborated from developers across the world).
The client provided me with a spreadsheet that she created. I then imported her products in, saving the step of adding each product into the backend, one at a time. This saved her a number of hours of labor, and is something i recommend clients with more than 20 products. The web site takes all major credit cards.