Sale 1:

https://backpack.tf/item/8231205202

https://backpack.tf/profiles/76561198850121720#!/compare/1746057600/1746144000

https://backpack.tf/profiles/76561199485225128#!/compare/1746057600/1746144000

Sold for 10 keys pure

Sale 2:

https://backpack.tf/item/8231205202

https://backpack.tf/profiles/76561198850121720#!/compare/1740960000/1741046400

https://backpack.tf/profiles/76561198238811080#!/compare/1741046400/1741478400

Seller looks like he sold a bunch of stuff to a bot (including this unusual) and bought a Non-Craftable Flip-Flops painted TS. Roughly 10 keys with misusing all the stuff

Sale 3:

https://backpack.tf/item/2799397059

https://backpack.tf/profiles/76561198890990852#!/compare/1746057600/1746144000

Doesn't show on buyers side as buyer sold it pretty much same day for sale 4

Sold for 12 keys and 10 ref (rounding to 12 flat)

Sale 4:

https://backpack.tf/item/2799397059

https://backpack.tf/profiles/76561199485225128#!/compare/1746057600/1746144000

https://backpack.tf/profiles/76561198393901214#!/compare/1746057600/1746144000

Bulk for an Anti-Freeze Hong Kong Cone

Sale 5:

https://backpack.tf/item/2799397059

https://backpack.tf/profiles/76561199171132199#!/compare/1745625600/1745712000

https://backpack.tf/profiles/76561197962821756#!/compare/1745625600/1745712000

Bulk

Sale 6:

https://backpack.tf/item/2799397059

https://backpack.tf/profiles/76561198890990852#!/compare/1745625600/1745712000

https://backpack.tf/profiles/76561197962821756#!/compare/1745712000/1745884800 - Doesn't show on sellers side

Going with 10 - 12 keys