Believe it or not, you can buy things cheaper from other internet stores then you can on ebay. OK, there are some bargains to be had, especially with photography equipment, but the common thought that everything is cheaper on ebay is not always true.
One great source of second hand camera gear is on photography related forums. Many photographers give the first offer to people who use their favourite forums and often the offer will be better than when they put their gear on ebay.
If you are thinking about buying a camera, it is well worth checking out the second hand market as other photographers are replacing their kit when they reach it’s limits, but it can be perfect for a beginner. With digital prices coming down all the time, a 1 year old camera will still have all the functionality you would need to learn photography, but will be a fraction of the price of a new camera.