Item 1

https://backpack.tf/item/12643551959

Sale 1

https://backpack.tf/profiles/76561198341520094#!/compare/1685664000/1689811200

https://backpack.tf/profiles/76561199026390261#!/compare/1685577600/1685664000

No clue

Sale 2

https://backpack.tf/profiles/76561199026390261#!/compare/1689379200/1689724800

https://backpack.tf/profiles/76561198177146470#!/compare/1685059200/1689897600

No clue

Item 2

https://backpack.tf/item/9569388072

Sale 3

https://gladiator.tf/time-machine?item=Vivid%20Plasma%20Modest%20Metal%20Pile%20of%20Scrap&at=2023-06-12T17:13:39.000Z

https://backpack.tf/profiles/76561199072654974#!/compare/1686441600/1686528000

https://backpack.tf/profiles/76561198354459626#!/compare/1686441600/1686528000

Can only match ~12 keys, which is incomplete

Sale 4

I'll cover mp.tf together at the end

Sale 5

https://backpack.tf/profiles/76561198453530349#!/compare/1690156800/1690243200

Untrace, this is likely the Jul 24 mp.tf sale that dumped (I'll make a note to exclude)

Sale 6

https://backpack.tf/profiles/76561198453530349#!/compare/1690156800/1690243200

https://backpack.tf/profiles/76561198280524116#!/compare/1690156800/1690243200

Untrace, can only match ~7 keys

Sale 7

https://backpack.tf/profiles/76561198280524116#!/compare/1690156800/1690243200

https://backpack.tf/profiles/76561199437234520#!/compare/1691712000/1692230400

No clue

Mp.tf

https://marketplace.tf/items/tf2/30001;5;u16

$38.74 / $1.95 = ~20 keys (Aug 24)

$38.74 / $2.01 = ~19 keys (Aug 8)

$41.95 / $2.02 = ~21 keys (Aug 30)

Total Sales

19, 20, 21

https://imgur.com/a/zzG9biV

20 was dumped to scrapyard, but it isn't important to the range regardless

Taking 19 - 21 keys c: