Proof:

http://www.tf2outpost.com/trade/6634184 - An offer of Genuine Awper Hand (3.66 - 4) + Anger (4) = 7.66 - 8 = 1.27 - 1.33 keys

http://www.tf2outpost.com/trade/14026935 - Probably sold to Strange Shotgun 1.3 - 1.5

http://www.tf2outpost.com/trade/13642060 - Sold for 1 key 3 ref (1.5)

http://www.tf2outpost.com/trade/14150779 - Sold for 1 key 4 ref (1.66)

http://www.tf2outpost.com/trade/14019819 - Sold at least 1 for 2 keys to this guy: http://www.tf2outpost.com/backpack/76561198060779671, you can check history and backpack and stuff

http://www.tf2outpost.com/trade/8617594 - Sold 1 recently for 2 keys

http://www.tf2outpost.com/trade/9431127 - Sold for 2 keys

Less than 4 pages on op, some are overpriced, some are in sets or strange parts which means not many trades

At the moment of posting 0 in classifieds