Item 1

https://backpack.tf/item/12177468327

Sale #1

Untraceable-

Seller: https://backpack.tf/profiles/76561198123866857#!/compare/1687305600/1689897600

Buyer: https://backpack.tf/profiles/76561198163410202#!/compare/1688860800/1690502400

Item 2

https://backpack.tf/item/11830407475

Sale #2

Bulk sale?-

Seller: https://backpack.tf/profiles/76561198832744145#!/compare/1686873600/1686960000

Buyer: https://backpack.tf/profiles/76561198298597700#!/compare/1686873600/1686960000

Sale #3

Untraceable-

Seller: https://backpack.tf/profiles/76561198298597700#!/compare/1688601600/1688688000

Buyer: https://backpack.tf/profiles/76561198841275520#!/compare/1690934400/1691107200

Sale #4

Untraceable-

Seller: https://backpack.tf/profiles/76561198841275520#!/compare/1690934400/1691107200

Buyer: https://backpack.tf/profiles/76561199244599385#!/compare/1690934400/1691366400

Item 3

https://backpack.tf/item/10516713175

Sale #5

Bulk transfer-

Seller: https://backpack.tf/profiles/76561199186234217#!/compare/1683936000/1684022400

Buyer: https://backpack.tf/profiles/76561198251704884#!/compare/1686700800/1686787200

Marketplace.tf Sales

https://marketplace.tf/items/tf2/463;5;u3098

MP.TF Sale #1

Sold for $59.99 on June 13, 2023

Keys @ $1.98

59.99/1.98 = 30.30ish keys

MP.TF Sale #2

Sold for $69.99 on July 24, 2023

Keys @ $1.95

69.99/1.95 = 35.89ish keys

MP.TF Sale #3

Sold for $69.99 on July 25, 2023

Keys @ $1.95

69.99/1.95 = 35.89ish keys

Sales @ 30, 36, 36

Taking 30-36 here