done by Ink

The second hat goes between owners -ish https://backpack.tf/item/6567037487 , but anyways

Sale 1

trade along with an 11 key hat and 5 keys for a cloud 9 bomber knight https://backpack.tf/profiles/76561198139276623#!/compare/1525392000/1525478400 .

Sale 2

https://backpack.tf/profiles/76561198062611321#!/compare/1524441600/1524787200 here it was sold with a 145 key item for a scorching flames falkirk helm (250 keys)

Sale 3

Here it is sold with 125 keys and a 40 key hat for a green energy hong kong cone (335-380) https://backpack.tf/profiles/76561198267189538#!/compare/1523404800/1523491200

Sale 4 (my sale)

Traded 1:1 for a startstorm insomnia prehistoric pullover (85-90) https://backpack.tf/profiles/76561198272881838#!/compare/1529798400/1529884800

Sale 1: 130 - 11 -5 = 114

Sale 2: 250 - 145 = 105 Sort of a bulksale so I'm not counting this one

Sale 3: 335 to 380 - 165 = 170 to 215 Huge outlier, so not coutning this one either

Sale 4: 85-90

Price suggestion at 90 flat since there's a hat https://backpack.tf/item/6751061278 being sold at 90 for 2months.