Counter, requested by Lemons. Credit to Bob for the first few sales.

Item 1:

https://backpack.tf/item/12341612370

Sale 1:

https://backpack.tf/profiles/76561199026390261#!/compare/1709510400/1709596800

https://backpack.tf/profiles/76561198872730126#!/compare/1709510400/1709596800

untrace

Sale 2:

https://backpack.tf/profiles/76561198872730126#!/compare/1710201600/1710288000

https://backpack.tf/profiles/76561199207750538#!/compare/1710201600/1710288000

untrace

Sale 3:

https://backpack.tf/profiles/76561199207750538#!/compare/1710201600/1710288000

https://backpack.tf/profiles/76561199564942025#!/compare/1710201600/1710288000

7 keys + 33 ref = 7.5

Sale 4:

https://backpack.tf/profiles/76561199564942025#!/compare/1710374400/1710460800

https://backpack.tf/profiles/76561199005945880#!/compare/1710374400/1710460800

9

Sale 5:

https://backpack.tf/profiles/76561199005945880#!/compare/1710806400/1710892800

https://backpack.tf/profiles/76561199244695125#!/compare/1710806400/1710892800

9

Sale 6:

https://backpack.tf/profiles/76561199244695125#!/compare/1711756800/1711843200

https://backpack.tf/profiles/76561198200322295#!/compare/1711756800/1711843200

paid with 1 key for christmas tree hat (indate:9)

8

Sale 7:

https://backpack.tf/profiles/76561198200322295#!/compare/1713139200/1713225600

https://backpack.tf/profiles/76561199102451836#!/compare/1713139200/1713225600

bulk

Newer sales:

https://backpack.tf/profiles/76561198200322295#!/compare/1719878400/1721347200 - Near ID: 14666866445

https://backpack.tf/profiles/76561198365881926#!/compare/1714435200/1722038400

https://backpack.tf/item/12341612370

10 keys

https://backpack.tf/profiles/76561198365881926#!/compare/1714435200/1722038400

https://backpack.tf/profiles/76561198442162119#!/compare/1721952000/1722038400

https://backpack.tf/item/12341612370

Untraceable

https://backpack.tf/profiles/76561198251704884#!/compare/1719360000/1719446400

https://backpack.tf/profiles/76561198235210368#!/compare/1721779200/1721865600

https://backpack.tf/item/13051748185

Untraceable, probably gambled

https://backpack.tf/profiles/76561198235210368#!/compare/1722816000/1722902400

https://backpack.tf/profiles/76561198841365001#!/compare/1722729600/1722816000

https://backpack.tf/item/13051748185

probably gambled again

No current sellers.

Sales at:

7.5

8

9 (2x)

10

https://imgur.com/a/SAxVdlm - buyers at 7.5, excluding 7.5.

Taking 8-10.