Item 1

https://backpack.tf/item/13129678727

Sale #1

Bulk sold for something, untraceable-

Seller: https://backpack.tf/profiles/76561198170090381#!/compare/1686873600/1690243200

Buyer: https://backpack.tf/profiles/76561198058954965#!/compare/1686787200/1686873600

Sale #2

Sold for a Green Energy Cotton Head (85 keys)-

Seller: https://backpack.tf/profiles/76561198058954965#!/compare/1689033600/1689120000

Buyer: https://backpack.tf/profiles/76561198362305972#!/compare/1689033600/1689120000

Item 2

https://backpack.tf/item/13124721025

Sale #3

Untraceable-

Seller: https://backpack.tf/profiles/76561198884587456#!/compare/1687824000/1687910400

Buyer: https://backpack.tf/profiles/76561198024152496#!/compare/1682121600/1687910400

Sale #4

Sold for 41 keys + 41.88 refined-

Seller: https://backpack.tf/profiles/76561198024152496#!/compare/1687910400/1687996800

Buyer: https://backpack.tf/profiles/76561199026390261#!/compare/1687910400/1687996800

Sale #5

Untraceable-

Seller: https://backpack.tf/profiles/76561199026390261#!/compare/1688688000/1688774400

Buyer: https://backpack.tf/profiles/76561199094850166#!/compare/1688515200/1688860800

Sale #6

Either untraceable or given for some unusual that were traded back later, unusable-

Seller: https://backpack.tf/profiles/76561199094850166#!/compare/1688860800/1689724800

Buyer: https://backpack.tf/profiles/76561199005199375#!/compare/1687564800/1690243200

MP.TF Sale #1

Sold for $110 on July 28, 2023

Keys @ $1.95

110/1.95 = 56.41ish keys

https://marketplace.tf/items/tf2/31325;5;u273

Sales @ 42, 56, 85

Taking 56-85 here