Item 1

https://backpack.tf/item/12198946488

Sale #1

Transfer to owner-

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

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

Item 2

https://backpack.tf/item/5346721155

Whole history is just a tradeback, not using here

Item 3

https://backpack.tf/item/4394610130

Sale #2

Transfer to owner here-

Seller: https://backpack.tf/profiles/76561199192607141#!/compare/1686700800/1686787200

Buyer: https://backpack.tf/profiles/76561199099521803#!/compare/1686614400/1686787200

Item 4

https://backpack.tf/item/12183299189

Sale #3

ID "13067786360" of the unusual matches one key and a few refined, clearly incomplete so will just not use-

Seller: https://backpack.tf/profiles/76561198271892201#!/compare/1684800000/1684886400

Buyer: https://backpack.tf/profiles/76561199132184792#!/compare/1684800000/1684886400

MP.TF Sale #1

Sold for $59.99 on July 24, 2023

Keys @ $1.95

59.99/1.95 = 30.76ish keys

https://marketplace.tf/items/tf2/1157;5;u3095

Only sale @ 31

Taking 31 flat