Sold for 30 keys

http://i.imgur.com/z0mz7x3.png

Sold for 24 Keys (A bit unclear, but buyout for the trade was 24 keys)

http://www.tf2outpost.com/trade/25566986

http://backpack.tf/profiles/76561198049372234?time=1428130800

http://backpack.tf/profiles/76561198049372234?time=1428217200

http://backpack.tf/profiles/76561198124324994?time=1428994800 - Sold for Smoking KE (40 Keys) w/ 13 Keys + S.F. Flamethrower + Sweets (2 Keys) ~Outlier

Sold for 26 keys

http://www.tf2outpost.com/trade/25598317 - Sold for 21 Keys + Spec. KS Botkiller Gold Knife Mk.II w/ Parts (5 Keys)? ~26 Key

Previous market owners have buyouts of 24 keys

http://www.tf2outpost.com/trade/24931592

http://www.tf2outpost.com/trade/25734897

But sales at 24-30 range and even beyond show that it is possible to sell the hat for more

Credit goes to roller for the last 3 sales