History 1: https://backpack.tf/item/9338536706

Trade before it was unusualified:

https://backpack.tf/profiles/76561198134214128#!/compare/1604361600/1604448000

Trade before it was unusualified:

https://backpack.tf/profiles/76561198829669573#!/compare/1604448000/1604534400

Untraceable:

https://backpack.tf/profiles/76561198154629719#!/compare/1604880000/1606003200

https://backpack.tf/profiles/76561198086802486#!/compare/1564272000/1610668800

History 2: https://backpack.tf/item/4443669599

7 keys:

https://backpack.tf/profiles/76561198014404374#!/compare/1605312000/1605398400

https://backpack.tf/profiles/76561198046407557#!/compare/1604966400/1606089600

History 3: https://backpack.tf/item/2798982885

2 keys 33 ref, 2.62 ~2.6 keys

https://backpack.tf/profiles/76561198807326056#!/compare/1610928000/1611187200

https://backpack.tf/profiles/76561199099031605#!/compare/1610928000/1611014400

History 4: https://backpack.tf/item/2745057590

Untraceable:

https://backpack.tf/profiles/76561198093233903#!/compare/1605657600/1607558400

https://backpack.tf/profiles/76561198447606862#!/compare/1606608000/1606953600

Mannco.Store sale

History 5: https://backpack.tf/item/2730556395

Two transfers

Untraceable:

https://backpack.tf/profiles/76561199095402788#!/compare/1605916800/1606003200

https://backpack.tf/profiles/76561198005032783#!/compare/1605916800/1606003200

Bulk:

https://backpack.tf/profiles/76561198005032783#!/compare/1606089600/1606176000

https://backpack.tf/profiles/76561199005286760#!/compare/1606176000/1606262400

Untraceable:

https://backpack.tf/profiles/76561199005286760#!/compare/1608336000/1608422400

https://backpack.tf/profiles/76561198841279602#!/compare/1608336000/1608422400

Marketplace.tf sales: https://marketplace.tf/items/tf2/1119;5;u3045

November 25: $6.95/1.75=3.97 ~3.95 keys

December 4: $5.83/1.76=3.31 ~3.3 keys

Mannco.Store sale: https://mannco.store/item/25834

December 17: $5.05/1.6=3.16 ~3.15 keys

Unsolds: 5.96 keys (https://backpack.tf/item/2730556395), 6 keys (https://backpack.tf/item/2798982885)

Sales at 2.6, 3.15, 3.3, 3.95, 7

Given the two sellers at 6, 7 looks like an outlier, it's also really far away from the other sales

Buyers up to 2.87-2.88, 2.6 looks low

Gonna go 3.15-3.95