You can get it on GreenmanGaming for $38 right now. Well, it's $40, but you get the option of another $3 store credit or $2 back. They're a legit site, but be warned - your card may be denied due to it being outside the US. I had to call my credit card company to straighten it out on another game a year ago or so and still have to do it from time to time. Still, a great deal if you don't mind missing out on any of the pre-order bonuses.
http://www.greenmangaming.com/s/us/en/pc/games/shooter/aliens-colonial-marines/GMG Code:
GMG20-PJFEW-Y16HK
