Item 1

https://backpack.tf/item/10152963557

Sale 1

https://backpack.tf/profiles/76561199112885338#!/compare/1693440000/1694649600

https://backpack.tf/profiles/76561199161916038#!/compare/1694736000/1694995200

Probably gambling

Sale 2

https://backpack.tf/profiles/76561199161916038#!/compare/1694995200/1695081600

https://backpack.tf/profiles/76561197963802299#!/compare/1694908800/1694995200

No clue

Sale 3

https://backpack.tf/profiles/76561197963802299#!/compare/1694995200/1695168000

https://backpack.tf/profiles/76561198138042338#!/compare/1694995200/1695081600

No clue

Sale 4

https://backpack.tf/profiles/76561198138042338#!/compare/1695081600/1695168000

https://backpack.tf/profiles/76561198854496201#!/compare/1694995200/1695081600

Can only match a handful of keys

Sale 5

https://backpack.tf/profiles/76561198854496201#!/compare/1695081600/1695254400

https://backpack.tf/profiles/76561198164814063#!/compare/1695427200/1695686400

No clue

Sale 6

https://backpack.tf/profiles/76561198164814063#!/compare/1698883200/1698969600

https://backpack.tf/profiles/76561199051603983#!/compare/1698883200/1698969600

Strange Festivized Professional Killstreak Sniper Rifle + ~1.45 keys in adds

https://gladiator.tf/sales?item=Strange%20Festivized%20Professional%20Killstreak%20Sniper%20Rifle&at=2023-11-18T00:17:37.339Z - Sniper = 23 - 26? (24.5)

24.5 + 1.45 = ~26 keys

Sale 7

https://backpack.tf/profiles/76561199051603983#!/compare/1698969600/1699056000

https://backpack.tf/profiles/76561198125894529#!/compare/1698969600/1699056000

Phantom Crown Brain-Warming Wear + ~5 keys in adds

No sales there that come out above buyers so I'm taking buyers @ 13.65 keys (https://imgur.com/a/fRQxKiQ)

13.65 + 5 = ~19 keys

Sale 8

https://backpack.tf/profiles/76561198125894529#!/compare/1698969600/1699056000

https://backpack.tf/profiles/76561198402572053#!/compare/1698969600/1699056000

24 keys

Sale 9

https://backpack.tf/profiles/76561198402572053#!/compare/1699056000/1699142400

https://backpack.tf/profiles/76561199051516190#!/compare/1699056000/1699142400

No clue

Sale 10

https://backpack.tf/profiles/76561199051516190#!/compare/1699315200/1699401600

https://backpack.tf/profiles/76561199069472222#!/compare/1699315200/1699401600

Added for a Iridescence Reel Fly Hat, better used there

Sale 11

https://backpack.tf/profiles/76561199069472222#!/compare/1699747200/1699833600

https://backpack.tf/profiles/76561198148156067#!/compare/1699833600/1700006400

30 keys

Mp.tf

https://marketplace.tf/items/tf2/31111;5;u35

https://backpack.tf/item/9205929957

$46.99 / $2.03 = ~23 keys (Sep 22)

Total Sales

19, 23, 24, 26, 30

https://imgur.com/a/5opYiS8

26 in mainly pure re-sold for 19 in unusual / mixed, we can probs exclude those two sales

Taking 23 - 30 keys c: