If anyone wants a beta key you can get one right here:

http://www.youtube.com/watch?v=VaR2BPDXQLc

It's beta only key that you can activate on STEAM.

The reason you don't see that many PC games on store shelves these days is because of DirectDownload, Gamefly and STEAM - aka anything that allows you to download the game directly.  It's easier to manage and is basically the 'normal' way to get a PC game.