Item 1

https://backpack.tf/item/14913733184

Sale 1

https://backpack.tf/profiles/76561198311498888#!/compare/1728691200/1728777600

https://backpack.tf/profiles/76561198212703000#!/compare/1728604800/1728777600

~15 keys

Sale 2

https://backpack.tf/profiles/76561198212703000#!/compare/1730332800/1730505600

https://backpack.tf/profiles/76561199564942025#!/compare/1730419200/1730505600

Re-dumped in bulk

Sale 3

https://backpack.tf/profiles/76561199564942025#!/compare/1731888000/1731974400

https://backpack.tf/profiles/76561199072654974#!/compare/1731888000/1731974400

No clue

Item 2

https://backpack.tf/item/7957382560

Sale 4

https://backpack.tf/profiles/76561199110809353#!/compare/1731801600/1731888000

https://backpack.tf/profiles/76561198135388328#!/compare/1731974400/1732060800

No clue

Sale 5

https://backpack.tf/profiles/76561198135388328#!/compare/1732406400/1732492800

https://backpack.tf/profiles/76561198857228921#!/compare/1732147200/1732492800

~21 keys match?

Item 3

https://backpack.tf/item/7956738429

Just bot transfers

Item 4

https://backpack.tf/item/2242197447

Duped, nothing here

Mp.tf

https://marketplace.tf/items/tf2/30081;5;u58

$29.99 / $1.78 = ~17 keys (Nov 20)

$23.99 / $1.79 = ~13 keys (Dec 26)

Total Sales

13, 15, 17, 21

https://imgur.com/a/HJRsjsS

15 was re-dumped for less after roughly a month...

21 / 17 seems high given the unsold

I'll go with a smaller drop to compensate for the higher sales @ 21 & 17

Taking 13 - 15 keys c:

Unsolds:

https://backpack.tf/item/7956738429 - 15