This suggestion is wrong, but I cannot be assed with the fucking hassle.

Me and this hat, we, don't get on.

SALES;

http://backpack.tf/profiles/76561198074193832#!/compare/1461456000/1461628800

Sold for Duped Burning Tyrannus (mini at 110)

= 110

http://backpack.tf/profiles/76561198049054413#!/compare/1461283200/1461369600

http://backpack.tf/profiles/76561198084976847#!/compare/1461283200/1461369600

Sold for PE Beak (Outdated in a couple days, gonna mini, at 140)

= 140

http://backpack.tf/profiles/76561197995194055#!/compare/1461196800/1461283200

Sold for Burning Slope Scopers (140)

Tyrannus mini:

http://www.tf2outpost.com/trade/28032432

http://backpack.tf/profiles/76561198025132482#!/compare/1459555200/1459814400

Sold for 85 pure

http://backpack.tf/profiles/76561198112099979#!/compare/1461369600/1461456000

= 138

http://www.tf2outpost.com/trade/28140853 Seller for 110 pure

The sales average to about 110, so taking 110.

Beak mini:

http://backpack.tf/profiles/76561198112889123#!/compare/1460764800/1460851200

(66 + 27 + 78 + 60 + 29) - 60 = 140

http://backpack.tf/profiles/76561198058834083#!/compare/1454832000/1455004800

Mallard Kone (135)

Just rounding to 140 and using that.

Let it ride.