Re-sugg with a range

Item 1

https://backpack.tf/item/10411987535

Sale 1

https://backpack.tf/profiles/76561197997249344#!/compare/1667088000/1668729600

https://backpack.tf/profiles/76561198216453689#!/compare/1668556800/1668729600

Can't even find the transfer onto the mp.tf bot

Sale 2

Probably the Nov 26 sale?

https://marketplace.tf/items/tf2/31200;5;u58

https://manic.tf/keyprice/?at=2022-11-26&price=79.99

~40 keys

Item 2

https://backpack.tf/item/10338222895

Sale 3

Probably the Dec 20 sale?

https://marketplace.tf/items/tf2/31200;5;u58

https://manic.tf/keyprice/?site=marketplace.tf&at=2022-12-20&price=79.99

~39 keys

Item 3

https://backpack.tf/item/10338222895

Sale 4

https://marketplace.tf/items/tf2/31200;5;u58

https://manic.tf/keyprice/?site=marketplace.tf&at=2022-12-31&price=79.99

~37 keys

Sale 5

Dumped to stn, currently listed for 32

https://gyazo.com/8e460d2cfa173c4d7be2e84e2cc83804

Item 4

https://backpack.tf/item/11540600511

Sale 6

https://backpack.tf/profiles/76561199110809353#!/compare/1675468800/1675555200

https://gladiator.tf/time-machine?item=Cloud%209%20Thousand-Yard%20Stare&at=2023-01-03T04:37:42.000Z

Likely 39 keys, keys aren't traceable however

Mp.tf

https://marketplace.tf/items/tf2/31200;5;u58

$79.99 / $2.05 = ~39 keys

Total Sales

37, 39, 39, 40

Current unsold at 32 being used for the range of 32 - 40 keys as per Lemon's comment c: