Item 1

https://backpack.tf/item/9119401960

I'll cover all these sales at the end

Item 2

https://backpack.tf/item/6761448106

Ignoring the gamblers I recognize...

Sale 1

https://backpack.tf/profiles/76561198192838927#!/compare/1674259200/1679443200

https://backpack.tf/profiles/76561198868796872#!/compare/1646092800/1674345600

?

Sale 2

https://backpack.tf/profiles/76561198868796872#!/compare/1674345600/1675036800

https://backpack.tf/profiles/76561198060478647#!/compare/1674345600/1675814400

?

Item 3

https://backpack.tf/item/6738567481

Sale 3

https://gladiator.tf/time-machine?item=Circling%20Heart%20Tundra%20Top&at=2023-01-26T10:24:39.000Z

https://backpack.tf/profiles/76561198099652804#!/compare/1674691200/1677542400

https://backpack.tf/profiles/76561199125108615#!/compare/1677542400/1677628800

Can't find buyer compare, ~42 keys match tho

Sale 4

Bot - - > Bot Owner

Mp.tf

https://marketplace.tf/items/tf2/30976;5;u19

$129.99 / $2.05 = ~63 keys

Mannco.store

https://mannco.store/item/440-circling-heart-unusual-tundra-top

$99.95 / $1.86 = ~54 keys

$80.51 / $1.89 = ~43 keys

$99.99 / $1.88 = ~53 keys

Total Sales

42, 43, 53, 54, 63

Not sure what range to go with here

43 - 53 keys?