I did a little more searching it was $9.81 + 5 free games part of Rezzed promo plus coupon code. Oh well maybe next time.
**** this is not correct i missed the date, still not sure what price was on greenmangaming ****
Just goto the amazon link below, there is some contest and everyone who enters get a free copy of Thief: Gold (1998)
http://www.amazon.com/gp/feature.html?ref_=tsm_1_tw_s_vg_n19o3z&docId=1001928521
EDIT: It appears as you dont even have to enter the contest to get a key.
You can just...