Resuggesting! Thank you to Yung Plague for providing me with the info on their sale!

Item 1

https://backpack.tf/item/432655195

Sale #1

Sold for 65 keys (keys in buyer's side)-

Seller: https://backpack.tf/profiles/76561198453530349#!/compare/1683590400/1683676800

Buyer: https://backpack.tf/profiles/76561199033861464#!/compare/1683676800/1683763200

Sale #2

Untraceable?-

Seller: https://backpack.tf/profiles/76561199033861464#!/compare/1685232000/1685491200

Buyer: https://backpack.tf/profiles/76561198091184632#!/compare/1685404800/1685491200

Sale #3

Sold for 42 keys-

Seller: https://backpack.tf/profiles/76561198091184632#!/compare/1685404800/1685491200

Buyer: https://backpack.tf/profiles/76561199446736742#!/compare/1685318400/1685491200

Sale #4

Sold with 5 keys + 15.33 refined for a Morning Glory Birdcage (57 keys) = 57-5 = 52 keys

Seller: https://backpack.tf/profiles/76561199446736742#!/compare/1685836800/1685923200

Buyer: https://backpack.tf/profiles/76561198283091524#!/compare/1685750400/1685836800

Sale #5

Sold for 62 keys + 25 refined (proof of the sale-

Seller: https://backpack.tf/profiles/76561198283091524#!/compare/1685836800/1685923200

Buyer: https://backpack.tf/profiles/76561199392211477#!/compare/1685664000/1685836800

Sale #6

Untraceable-

Seller: https://backpack.tf/profiles/76561199392211477#!/compare/1689897600/1690243200

Buyer: https://backpack.tf/profiles/76561198048166329#!/compare/1689897600/1690761600

MP.TF Sale #1

Sold for $159.99 on August 5, 2023

Keys @ $2

159.99/2 = 80ish keys

https://marketplace.tf/items/tf2/147;5;u14

Sales @ 42, 52, 62, 65, 80

Taking 62-80 here