Where can I buy this?

[NTJedi]

I would also suggest playing the demo until your official copy arrives. The demo has a time limit yet once your official copy arrives you can continue those games.

[Wikd Thots]

No matter what the advantage you think there is in buying from someplace else, buy from Scrapnel at their store GamersFront.com

Having them KNOW you bought it can save you much hassle if you lose your CD key or the disc goes bad when you want to install on a new machine