If I ever start trading again, I might look into getting one of these. Great effect, decent hat, good price.

Sold for 39 Keys

http://backpack.tf/profiles/76561198060868591#!/compare/1488240000/1488412800

Sold for a Purple Energy Tippler's Tricorne(30.5 Keys) and ~16 Keys in Sweets(B/O was 39)

http://backpack.tf/profiles/76561198297529937#!/compare/1486512000/1486598400

http://www.tf2outpost.com/trade/28762482

Sold for a Stormy Storm Brown Bomber(37.5 Keys, round to 38)

http://backpack.tf/profiles/76561198068190834#!/compare/1487462400/1487548800

Seller at 36 Keys http://backpack.tf/item/401148088

36-39.

Credits to Mindacos for finding the proof, all I did was make the actual suggestion.