I owned this, probably one of my fave hats Ive had C:

year old price

Sales:

Stormy Muffs ( http://www.tf2outpost.com/trade/21103738 ) (4.8) (outlier)

Duped GE Dapper+Duped Blizzy Headwarmer ( http://www.tf2outpost.com/trade/21013330 ) (4+3=7*0.9=6.3)

Mini on Dapper:

Added 2 for Scorching Spartan ( http://backpack.tf/profiles/76561198048453884?time=1402210800 ---> http://backpack.tf/profiles/76561198048453884?time=1402038000 ) (7-2=5*0.9=4.5)

B/o of 4: http://www.tf2outpost.com/trade/21013330 (4), so wont be valued at more than 4

Mini for Head Warmer:

Pro Aussie Rocket w/ some parts ( http://backpack.tf/profiles/76561198041480813?time=1404198000 ---> http://backpack.tf/profiles/76561198041480813?time=1404284400 ) (~3.6)

Buyout of 3: http://www.tf2outpost.com/trade/21013330 , so wont be valued at more than 3

basing outlier on offers+the fact that duped sold for more than that