Item 1

https://backpack.tf/item/12381884110

Sale #1

Untraceable, probably traded between bots-

Seller: https://backpack.tf/profiles/76561198311498888#!/compare/1681516800/1681603200

Buyer: https://backpack.tf/profiles/76561198453530349#!/compare/1681516800/1681603200

Item 2

https://backpack.tf/item/12174074440

Sale #2

Untraceable?-

Seller: https://backpack.tf/profiles/76561198839898855#!/compare/1687996800/1688083200

Buyer: https://backpack.tf/profiles/76561199111073161#!/compare/1688083200/1688169600

Sale #3

Sold for 25 keys + .44 refined + sweets (2.7ish keys given buyers and sales for them) = 28 keys-

Seller: https://backpack.tf/profiles/76561199111073161#!/compare/1688169600/1688256000

Buyer: https://backpack.tf/profiles/76561198030553563#!/compare/1687996800/1688428800

Item 3

https://backpack.tf/item/6260230673

Sale #4

Seems to have been bulk transferred from owner to bot-

Seller: https://backpack.tf/profiles/76561198316071886#!/compare/1681776000/1681862400

Buyer: https://backpack.tf/profiles/76561199389182144#!/compare/1681257600/1681862400

Sale #5

Untraceable bulk-

Seller: https://backpack.tf/profiles/76561199389182144#!/compare/1685318400/1685404800

Buyer: https://backpack.tf/profiles/76561198073289996#!/compare/1684281600/1685404800

Sale #6

Sold for 27 keys + .33 refined-

Seller: https://backpack.tf/profiles/76561198073289996#!/compare/1686009600/1686096000

Buyer: https://backpack.tf/profiles/76561199103801420#!/compare/1686009600/1686096000

Sale #7

Bulk transfer?-

Seller: https://backpack.tf/profiles/76561199103801420#!/compare/1686700800/1686787200

Buyer: https://backpack.tf/profiles/76561198137642054#!/compare/1686528000/1686873600

MP.TF Sale #1

Sold for $62.99 on May 25, 2023

Keys @ $2

62.99/2 = 31.50ish keys

https://marketplace.tf/items/tf2/30897;5;u19

Sales @ 27, 28, 32

Taking 27-32 here