Item 1

https://backpack.tf/item/13185571781

Sale 1

https://backpack.tf/profiles/76561198809770239#!/compare/1687392000/1687737600

https://backpack.tf/profiles/76561198311498888#!/compare/1689292800/1689379200

No clue, can't load seller inv

Sale 2

https://backpack.tf/profiles/76561198311498888#!/compare/1689897600/1690070400

https://backpack.tf/profiles/76561198121830870#!/compare/1689811200/1690243200

https://imgur.com/a/gDvYmID

Can't match any keys to confirm this

Item 2

https://backpack.tf/item/13155431780

Sale 3

https://backpack.tf/profiles/76561198046960638#!/compare/1687564800/1687651200

https://backpack.tf/profiles/76561198311498888#!/compare/1687564800/1687651200

Can't match keys?

Sale 4

https://backpack.tf/profiles/76561198311498888#!/compare/1687824000/1687910400

https://backpack.tf/profiles/76561198310550735#!/compare/1687824000/1687910400

No clue

Item 3

https://backpack.tf/item/13063089889

Sale 5

https://backpack.tf/profiles/76561199084784906#!/compare/1688601600/1688688000

https://backpack.tf/profiles/76561199152793216#!/compare/1657152000/1688688000

Can't match keys

Sale 6

https://backpack.tf/profiles/76561199152793216#!/compare/1688947200/1689033600

https://backpack.tf/profiles/76561199111073161#!/compare/1688860800/1688947200

Nuts n' Bolts Airdog + Strange Fuel Injector < - - > Mirthful Mistletoe Elf Care Provider?

Mini for the Mirthful Mistletoe Elf Care Provider 9 keys

x + .35 = 9

9 - .35 = ~8.5 keys

Item 4

https://backpack.tf/item/12925273524

Sale 7

https://backpack.tf/profiles/76561198043115550#!/compare/1682726400/1682812800

https://backpack.tf/profiles/76561198337734785#!/compare/1682640000/1682812800

~7 keys

Item 5

https://backpack.tf/item/9826142546

Sale 8

https://backpack.tf/profiles/76561199185790151#!/compare/1687392000/1687910400

https://backpack.tf/profiles/76561198850274253#!/compare/1687564800/1687651200

No clue

Item 6

https://backpack.tf/item/7981713687

Sale 9

https://backpack.tf/profiles/76561199187383421#!/compare/1682985600/1683072000

https://backpack.tf/profiles/76561199135952616#!/compare/1682985600/1683072000

No clue

Sale 10

https://backpack.tf/profiles/76561199135952616#!/compare/1685491200/1685836800

https://backpack.tf/profiles/76561199104020413#!/compare/1685404800/1685836800

No clue

Mp.tf

https://marketplace.tf/items/tf2/30767;5;u31

$16.99 / $2.05 = ~8 keys (Apr 29)

$18.00 / $1.95 = ~9 keys (Jul 22)

Total Sales

7, 8, 8.5, 9

https://imgur.com/a/916JkRU

With the amount of buyer dumps I think 7 should be fine to include here as a low end

8.5 is a lil' iffy given how quicksell.store values things at buyers & I can't find a b/o for that sale

9 is just too high

Running with 7 - 8 keys c: