There are thousands of used Mercedes all over the Internet, on mailing lists, newsgroups and websites.
Many newspapers automatically run their classifieds on the web now as well as in print.
These are broken down here into several categories. High performance Links pointing to aftermarket tuners, customizers and builders of high performance cars of interest to MB owners. This is a fairly complete list of websites that have ads for Mercedes. It's difficult to keep current, and please let me know if sometihing is broken or missing. There are a few dealers that specialize is used Mercedes, from classic show cars to daily drivers.