The offer that I finally sold at was these 4 bills hats http://www.tf2outpost.com/trade/7458441 valued (using backpack.tf’s prices) at a maximum of 35 keys, the equivalent of 1.4 buds. Again, that is MAXIMUM value, assuming people pay extra for the paints, even the unpopular ones.

Additionally, here are some other people selling this hat on outpost, neither having better luck than I did.

http://www.tf2outpost.com/trade/7466571 - Sold his for an unusual valued here at 22-29 keys (1 bud med price)

http://www.tf2outpost.com/trade/5869491 - Has been trying to sell his at a price of 1.5 buds, and has had very little interest.