I may fail at pricing all of them at once, but I will succeed at pricing them individually.

Valid sellers at 1.33

http://www.tf2outpost.com/trade/20883896

http://www.tf2outpost.com/trade/20869250

http://www.tf2outpost.com/trade/20880274

Valid seller at 1.44

http://www.tf2outpost.com/trade/20873230

Sold for 1.44

http://www.tf2outpost.com/trade/20866930 (http://www.trade.tf/trade/520658176)

Sold for 1.66

http://www.tf2outpost.com/trade/20503943

http://www.tf2outpost.com/trade/20532082

http://www.tf2outpost.com/trade/20532403

Conclusion: Before you say something stupid like "Not enough proof, downvote", take a look on the market first. This thing is so rare now. Demand > Supply because supply of craft hats went down and it's reasonable for this thing to rise. Don't remove 1.33 from the range because there are valid 1.33 sellers.

Feel free to counter / support my proofs.