Item 1:

https://backpack.tf/item/10549826115

Sale 1: Untrace

https://backpack.tf/profiles/76561198076553513#!/compare/1629158400/1629504000

https://backpack.tf/profiles/76561198850274253#!/compare/1629158400/1629244800

Sale 2: key histories don't match

https://backpack.tf/profiles/76561198850274253#!/compare/1629244800/1629331200

https://backpack.tf/profiles/76561199085352588#!/compare/1629244800/1629417600

Item 2:

https://backpack.tf/item/7249466850

Sale 3: 78 keys + 30 ref

https://backpack.tf/profiles/76561199102407070#!/compare/1631059200/1631145600

https://backpack.tf/profiles/76561198129745094#!/compare/1631145600/1631232000

Sale 4: Untrace

https://backpack.tf/profiles/76561198129745094#!/compare/1631232000/1631318400

https://backpack.tf/profiles/76561198025680881#!/compare/1631232000/1631318400

Item 3:

https://backpack.tf/item/5557492449

Sale 5: 75 keys + 23 ref (75.4)

https://backpack.tf/profiles/76561198097271466#!/compare/1626998400/1627084800

https://backpack.tf/profiles/76561199098607786#!/compare/1626998400/1627084800

Sale 6: Untrace

https://backpack.tf/profiles/76561199098607786#!/compare/1629849600/1630108800

https://backpack.tf/profiles/76561198129205357#!/compare/1629849600/1630108800

Sale 7: Untrace

https://backpack.tf/profiles/76561198129205357#!/compare/1630108800/1630281600

https://backpack.tf/profiles/76561198097271466#!/compare/1630627200/1630713600

Sale 8: Untrace

https://backpack.tf/profiles/76561198097271466#!/compare/1630713600/1630886400

https://backpack.tf/profiles/76561198028759242#!/compare/1630713600/1630972800

Sale 9: Untrace

https://backpack.tf/profiles/76561198028759242#!/compare/1630713600/1630972800

https://backpack.tf/profiles/76561198841279602#!/compare/1630627200/1630713600

Sale 10: Bought for 83 keys

https://backpack.tf/profiles/76561198841279602#!/compare/1633392000/1633478400

https://backpack.tf/profiles/76561198071200441#!/compare/1633392000/1633478400

https://imgur.com/a/XpY0DkH

https://imgur.com/a/IuWqs9L

Sale 11/12:

https://marketplace.tf/items/tf2/139;5;u10

sale @ $200/1.81 = 110.49 rounding to 110

sale @ $190/1.81 = 104.9 rounding to 105

Item 4:

https://backpack.tf/item/918750534

Sale 13: Untrace

https://backpack.tf/profiles/76561197970891690#!/compare/1626912000/1626998400

https://backpack.tf/profiles/76561199098694108#!/compare/1626998400/1627084800

Sale 14: bot to bot? untrace

https://backpack.tf/profiles/76561199098694108#!/compare/1627171200/1627257600

https://backpack.tf/profiles/76561199107865875#!/compare/1627171200/1627257600

Sale 15: bot to bot? untrace

https://backpack.tf/profiles/76561199107865875#!/compare/1627171200/1627257600

https://backpack.tf/profiles/76561198337734785#!/compare/1627084800/1627171200

Sale 16: 69 keys

https://backpack.tf/profiles/76561198094145983#!/compare/1630540800/1630627200

https://backpack.tf/profiles/76561198337734785#!/compare/1630540800/1630627200

Sale 17: 75 keys

https://backpack.tf/profiles/76561198094145983#!/compare/1631059200/1631145600

https://backpack.tf/profiles/76561198061108999#!/compare/1631059200/1631145600

Sales @ 69, 75, 75.4, 78.5, 83, 105, 110

Classifieds: https://imgur.com/a/5A5KfgN

Taking 75-110.

Duped one sold for 90 pure:

https://backpack.tf/item/1500611733

https://gladiator.tf/listings/616329752e48752397fc54ff

https://backpack.tf/profiles/76561198125668929#!/compare/1633651200/1633910400

https://backpack.tf/profiles/76561199102508208#!/compare/1633737600/1633910400