Sometimes life is scary and dark. That is why we must find the light. -BMO
It's been at this price for weeks and weeks now, as "Level 3 Tunt" pointed out. Still, a decent deal, but there are several previous threads on it.
I paid a few pennies more for a 3rd party seller copy a couple of weeks ago. Looks like it might hang around this price for a while.
Edit: in case my post isn't clear, I'm stating this to point out the history of the price, not to nag the OP. While it's good to do a quick search of the Hot Deals forum before posting, I think it's been a little while since this deal has been posted.
Further musings: I believe this title was unavailable for a little while, so my guess is the publisher reprinted it in a BIG way so there's a glut of games on the market atm. It'll be interesting to see if this becomes one of those rare "awesome" games that hits the bargain bin purely due to the publisher over printing. Much too early to tell atm.