I have so many Steam (and retail and other digital) games that I haven't bought (so much other stuff to play) this even when it's been 75% off on Steam but at a retail of $40, even Steam's 75% off is twice this price.
A lot of people hate Origin (I have it but haven't used it much so don't have a strong opinion either way) so read up on it before committing. I figure at $5 for the "full" game, it was worth a mention and maybe suffering through Origin even for those that hate it.
Crysis 1 is also there for $5 but, inexplicably, it's not the Maximum Edition. Still a good price but I'd want the Maximum Ed. I'm holding out for another Steam 75% off sale for $7.50 for that one.