Sale 1:

Sold for 20 keys

https://backpack.tf/profiles/76561198071596434#!/compare/1729296000/1729382400

https://backpack.tf/profiles/76561198324082153#!/compare/1729296000/1729382400

https://backpack.tf/item/15001311661

= 20 keys

Sale 2:

Sold for 13 keys

https://backpack.tf/profiles/76561198077691964#!/compare/1729641600/1729728000

https://backpack.tf/profiles/76561197967159739#!/compare/1729728000/1729814400

https://backpack.tf/item/14999098400

= 13 keys

Sale 3:

Sold for 12 keys (buyer’s end)

https://backpack.tf/profiles/76561199564942025#!/compare/1730073600/1730160000

https://backpack.tf/profiles/76561198406138209#!/compare/1730073600/1730160000

https://backpack.tf/item/12855758441

= 12 keys

Sale 4:

Sold for 10 keys

https://backpack.tf/profiles/76561198323145919#!/compare/1731283200/1731369600

https://backpack.tf/profiles/76561199225525494#!/compare/1731283200/1731369600

https://backpack.tf/item/14996158615

= 10 keys

Sale 5:

Sold for 8 keys. This follows the 12 key purchase.

https://backpack.tf/profiles/76561198406138209#!/compare/1730764800/1730851200

https://backpack.tf/profiles/76561198094365132#!/compare/1730764800/1730851200

https://backpack.tf/item/15110581638

Had to manually search for the keys:

https://backpack.tf/item/15110581646

https://backpack.tf/item/15110581648

https://backpack.tf/item/15110581651

https://backpack.tf/item/15110581653

https://backpack.tf/item/15110581656

https://backpack.tf/item/15110581658

https://backpack.tf/item/15110581662

https://backpack.tf/item/15110581664

https://i.imgur.com/unXqQZq.png - Buy order of 7 at the time

= 8 keys

Sale 6:

Sold for 7 keys

https://backpack.tf/profiles/76561199381954163#!/compare/1730073600/1730592000

https://backpack.tf/profiles/76561197967159739#!/compare/1730505600/1730592000

https://backpack.tf/item/15063026322

= 7 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198053758441#!/compare/1729123200/1729209600

https://backpack.tf/profiles/76561198071596434#!/compare/1729123200/1729209600

https://backpack.tf/item/15001311661

Untraceable

#2

https://backpack.tf/profiles/76561198413937720#!/compare/1731801600/1731888000

https://backpack.tf/profiles/76561198191137318#!/compare/1731801600/1731888000

https://backpack.tf/item/13896680548

Sold with Heavy Rain Russian Arms Race for 13 keys. Best to not use this sale unless we can find a B/O for both items individually.

#3

https://backpack.tf/profiles/76561198123901683#!/compare/1729900800/1730160000

https://backpack.tf/profiles/76561199564942025#!/compare/1730073600/1730160000

https://backpack.tf/item/12855758441

Untraceable/Bulk

#4

https://backpack.tf/profiles/76561199564942025#!/compare/1730073600/1730160000

https://backpack.tf/profiles/76561198406138209#!/compare/1730073600/1730160000

https://backpack.tf/item/12855758441

3 keys + negligible metal match

#5

https://backpack.tf/profiles/76561198075491803#!/compare/1729468800/1729555200

https://backpack.tf/profiles/76561198040630480#!/compare/1729468800/1729555200

https://backpack.tf/item/10744322471

Sold for 21 keys. Seller is banned for fake +trusts, so this isn’t valid.

Sellers:

https://i.imgur.com/Jr6JnHK.png

https://backpack.tf/item/15063026322 - 14 keys

https://backpack.tf/item/13896680548 - 20 keys

https://backpack.tf/item/11097261703 - 25 keys

Sales at:

7

8

10

12

13

20

20 is an outlier, and there’s a seller at 14 now. Excluding 20.

Going to condense the range by excluding 7 and 13, which will give us the same mid-point.

Taking 8-12 keys.