Auction You can have an auction for your visitors without running a large, commercial operation. If you have your own products or services, you can auction these on your site. Also, you might arrange for discounts selling other people's products and make your minimum bid so your lowest acceptable profit is assured. Consider your site's niche when deciding what products or services to auction. This helps your site visitors by keeping track of selections as they surf from page to page.
Many shopping carts are available to choose from.
Our own Master Shopper is a customizable cart that can handle thousands of products. Because it is customized for each installation, it is not sold as a downloadable program. If you only have one CGI program, make it one for visitor feedback. Site visitors are much more likely to write to you using a feedback form than when they have to click an email link to launch an emailing program on their computer. Visitor feedback is almost always sincere and is important enough to the visitor to take the time to write.