Meh, let's try pricing this. 1/3 in existance.

Sale #1:

Sold + ~1 key in sweets for a Circling Peace Sign Trophy Belt [27-31 keys] :

http://backpack.tf/profiles/76561198068127299/#!/compare/1459555200/1459641600 (It was the tomislav and the Mann of the House as sweets)

http://backpack.tf/profiles/76561198079035624/#!/compare/1459555200/1459641600 (seller's inv, here you can see the Bullet, the Mann and the Tomi going out of his inventory)

Maths : 29 [27-31] - 1 key = 28 keys

Taking it as 28 keys

Sale #2:

Sold for a Max Head

http://backpack.tf/profiles/76561198068127299/#!/compare/1459728000/1459814400

http://backpack.tf/profiles/76561198079380587/#!/compare/1459728000/1459814400

29.5 keys, rounding it up to 30 keys

Sale #3 :

Sold with 48 keys + 2 keys sweets for a duped Orbiting Planets TC :

http://imgur.com/qfCmJzp

http://imgur.com/8r5tWZM

http://imgur.com/Jc6sDv8

~14.5 keys (might be even less, considering, that I took the clean value)

Outlier, it's 2x less then the other 2 sales.

Bonus Sale #4 (I guess?) :

It got sold for a Morning Glory Heavy Duty Rag [~45 keys] http://backpack.tf/vote/id/56390661ba8d88bd1ba94aa6

That was 5 months ago, but looking at the fact, that this hat is unpriced, I thought I'll add it in, it's a outlier anyways.

I always do something wrong in my suggestions, so just tell me what I did wrong this time, thank you :3

More proof / Counters / Criticism are appreciated.