Have been sitting tight, waiting for this one to come on special. A mere $4.00 after applying the coupon code, only for the next 24 hours though!
My referral link, if you're feeling generous (you'll receive $2.00 credit towards your next purchase, as will I).
http://www.greenmangaming.com/?gmgr=givocohe
Enjoy!
Edit: this is a Steam-activated title. Just activated it myself, no issues.
If I register through your referral link, will that mean I only need to pay $2?