Study

Item 1

https://backpack.tf/item/9235090665

Sale 1

https://backpack.tf/profiles/76561198159623070#!/compare/1604793600/1606780800

https://backpack.tf/profiles/76561198135388328#!/compare/1606694400/1606780800

Untrace

Sale 2

https://backpack.tf/profiles/76561198135388328#!/compare/1610928000/1611014400

https://backpack.tf/profiles/76561198095293350#!/compare/1610928000/1611014400

9 keys match, excluding low

Item 2

https://backpack.tf/item/8774484799

Sale 3

https://backpack.tf/profiles/76561198040220192#!/compare/1601510400/1606262400

https://backpack.tf/profiles/76561198453530349#!/compare/1606176000/1606262400

Sold for 15 keys 5.55 ref

Sale 4

https://backpack.tf/profiles/76561198453530349#!/compare/1609718400/1609804800

https://prnt.sc/xtdwsg - sold for 20 keys, those key histories match and the ID is close enough for me

https://gladiator.tf/listings/5ff4d09611c438ab32c0185e - buyout 20 keys too

Item 3

https://backpack.tf/item/6881210630

Sale 5

Delisted off MP

Item 4

https://backpack.tf/item/5809229302

Sale 6

https://backpack.tf/profiles/76561198215568049#!/compare/1605916800/1607558400

https://backpack.tf/profiles/76561198054270952#!/compare/1607472000/1607558400

Bulk for Green Energy Towering Titanium Pillar of Hats

Sales

15, 20

Current Listings

https://prnt.sc/xte55i

11 days for 20 keys

Buyers almost at 17 keys

Taking 20 keys flat here