http://backpack.tf/vote/id/5228e0014f96f46c688b4568

Then look at the Price History.

Sale 1

http://www.tf2outpost.com/trade/21702505 - Sold for a Terror-Watt Human Cannonball (3.3*0.9 = 3 buds)

Sale 2

http://www.tf2outpost.com/trade/21623814 - Sold for a Miami Nights Whoopee Cap (2.5*0.9 = 2.3 buds) (Outlier)

Sale 3

http://www.tf2outpost.com/trade/21328989 - Sold for a Circling Heart Defiant Spartan (3.2*0.9 = 3 buds)

Sale 4

http://www.tf2outpost.com/trade/21573230 - Sold for Strange Professional Sticky and Grenade Launcher (Outlier)

Unused sales

http://www.tf2outpost.com/trade/21759063 - Sold for a Bubbling Hong Kong Cone

http://www.tf2outpost.com/trade/21622096 - Sold for a Circling Peace Sign Tyrant's Helm

http://www.tf2outpost.com/trade/21309157 - Sold for a Misty Skull L'Inspecteur

http://www.tf2outpost.com/trade/20237578 - Sold for a Haunted Ghosts Batter's Helmet (Duped)

Will price those later base on this.

Feel free to counter / support my proofs.