When people post to Ebay, there are often times when they make a spelling mistake in the title. This is a way to find yourself some bargains. For example, if you search for Nitendo (instead of Nintendo) on Ebay, you will find a ton of results currently for people who misspelled these item titles. If I were looking for Nintedo DS games, for example, I'd find things at a much better price if there were less bidders, and if there is a typo, there will be less bidders.
There is a Web site called Fat Fingers (typos can sometimes be called "fat finger problems") that will search Ebay for typos and return a set of results with typos in the same. The net result should be a set of bargain auctions. If you're looking for something, it can't hurt to try!