Experimedia - the place to go in the States for all varieties of experimental music - is running a year-end inventory reduction sale through December 28th, accounting for 20% off thousands of in-stock titles. Some of these are obviously pretty limited, so you may want to get on this as soon as possible. A couple of things fell out of my cart as I shopped. The already low prices are even lower now, and shipping rates are very, very reasonable as well. One of the best distros for various forms of electronic music especially, Experimedia also stocks just about anything else that could bare the "experimental" tag - metal, jazz, dub, techno, folk, "world" music, etc. The list literally goes on and on.
Shop the sale here.