Item 1

https://backpack.tf/item/13737557998

Sale #1

Untraceable-

Seller: https://backpack.tf/profiles/76561198382622753#!/compare/1699660800/1699747200

Buyer: https://backpack.tf/profiles/76561198872808205#!/compare/1699747200/1699833600

Item 2

https://backpack.tf/item/13719561543

Sale #2

Untraceable?-

Seller: https://backpack.tf/profiles/76561198411039894#!/compare/1698364800/1698451200

Buyer: https://backpack.tf/profiles/76561197963500354#!/compare/1698192000/1698451200

Sale #3

Untraceable?-

Seller: https://backpack.tf/profiles/76561197963500354#!/compare/1698451200/1698537600

Buyer: https://backpack.tf/profiles/76561199257984577#!/compare/1698192000/1698624000

Sale #4

Untraceable-

Seller: https://backpack.tf/profiles/76561199257984577#!/compare/1698796800/1699315200

Buyer: https://backpack.tf/profiles/76561197964546925#!/compare/1699142400/1699228800

Item 3

https://backpack.tf/item/13717242463

Sale #5

Sold for 20 keys (ID "13750388682" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561198062842880#!/compare/1698883200/1698969600

Buyer: https://backpack.tf/profiles/76561198116779194#!/compare/1698796800/1698969600

Item 4

https://backpack.tf/item/13651571637

Sale #6

Untraceable-

Seller: https://backpack.tf/profiles/76561198202993883#!/compare/1697068800/1697155200

Buyer: https://backpack.tf/profiles/76561198127214200#!/compare/1696377600/1697241600

Item 5

https://backpack.tf/item/13642984249

Sale #7

Untraceable, probably the mp.tf sale-

Seller: https://backpack.tf/profiles/76561198033652856#!/compare/1698796800/1698883200

Buyer: https://backpack.tf/profiles/76561198984885856#!/compare/1694995200/1699401600

MP.TF Sale #1

Sold for $69.99 on November 7, 2023

Average Key Price @ $1.75ish

69.99/1.75 = 39.99ish keys

https://backpack.tf/item/13642984249

https://marketplace.tf/items/tf2/31381;5;u3127

Sales @ 20, 40

Taking 20 flat :3