Over 2 month old price in need of an update. None currently on the market. 1 was offered 40 and 41 keys (1.9 buds), one sold for 1 bud + 20 keys (1.9 buds), and 2 sold for 1.4 buds. And yes I do own one. But if that's the reason you're going to downvote then you shouldn't be voting.

http://www.tf2outpost.com/trade/13001413 http://i.imgur.com/nOQkyD8.jpg

Bought one for 1 bud + 20 keys after not getting the one in link #1 for 40 keys.

http://www.tf2outpost.com/trade/13680745 http://www.tf2outpost.com/trade/13283368 http://i.imgur.com/scFr47Z.jpg

Despite having previous offers of 40 and 41 keys (1.9 buds), he decided to "quicksell" it for 1 + Bills + G Shred Alert (1.4 buds)

http://i.imgur.com/xUkPYY4.png

My transaction where I bought it for 30 keys (1.4 buds).

http://www.tf2outpost.com/trade/12821224

Sold for 1 bud + 4 keys + a S. Revolver (1.2 buds).

Considering quicksell/outlier as recommended by Blind Polar Bear.