The price on ebay could be pretty easily manipulated as could the stock. Perhaps they just stopped listing 10 at a time each as it makes it look like they're selling to the untrained eye. Also a lot of people have surely given up camping out so to speak so they may not all be 100% sure if it's readily available just yet as most news points to the fact that it is not.
Etc etc there's a lot of things that could be a factor.. or hell a little bit of all of it.