Item 1

https://backpack.tf/item/9572669771

Sale #1

Untraceable-

Seller: https://backpack.tf/profiles/76561198453530349#!/compare/1682640000/1682726400

Buyer: https://backpack.tf/profiles/76561198101649245#!/compare/1677542400/1682812800

Item 2

https://backpack.tf/item/7956089124

Sale #2

Untraceable-

Seller: https://backpack.tf/profiles/76561198188093413#!/compare/1683072000/1683158400

Buyer: https://backpack.tf/profiles/76561198177091294#!/compare/1682985600/1683158400

Item 3

https://backpack.tf/item/2178548363

Spelled, not using here for that

Item 4

https://backpack.tf/item/7456522555

Sale #3

Untraceable-

Seller: https://backpack.tf/profiles/76561198311498888#!/compare/1686182400/1686268800

Buyer: https://backpack.tf/profiles/76561199202110112#!/compare/1686096000/1686182400

Sale #4

Transfer between bot and owner?-

Seller: https://backpack.tf/profiles/76561199202110112#!/compare/1686700800/1686787200

Buyer: https://backpack.tf/profiles/76561199215748094#!/compare/1686787200/1686873600

Marketplace.tf Sales

https://marketplace.tf/items/tf2/538;5;u62

MP.TF Sale #1

Sold for $219.99 on May 12, 2023

Keys @ $2.02

219.99/2.02 = 108.91ish keys

MP.TF Sale #2

Sold for $219.99 on May 23, 2023

Keys @ $2

219.99/2 = 110ish keys

MP.TF Sale #3

Sold for $250 on May 27, 2023

Keys @ $2

250/2 = 125 keys

MP.TF Sale #4

Sold for $249.99 on July 20, 2023

Keys @ $1.95

249.99/1.95 = 128.2 keys

Sales @ 109, 110, 125, 128

Taking 109-128 here