Item 1

https://backpack.tf/item/12922151529

Sale #1

Untraceable-

Seller: https://backpack.tf/profiles/76561198042480596#!/compare/1683763200/1684368000

Buyer: https://backpack.tf/profiles/76561198351549661#!/compare/1683849600/1684281600

Item 2

https://backpack.tf/item/12102735515

Sale #2

Bulk transfer?-

Seller: https://backpack.tf/profiles/76561198164106885#!/compare/1685923200/1686441600

Buyer: https://backpack.tf/profiles/76561198188093413#!/compare/1688515200/1688601600

Marketplace.tf Sales

https://marketplace.tf/items/tf2/31271;5;u57

MP.TF Sale #1

Sold for $31.99 on May 17, 2023

Keys @ $2.02

31.99/2.02 = 15.84ish keys

MP.TF Sale #2

Sold for $31.99 on May 20, 2023

Keys @ $2.02

31.99/2.02 = 15.84ish keys

MP.TF Sale #3

Sold for $29.99 on July 26, 2023

Keys @ $1.95

29.99/1.95 = 15.38ish keys

MP.TF Sale #4

Sold for $29.99 on July 28, 2023

Keys @ $1.95

29.99/1.95 = 15.38ish keys

MP.TF Sale #5

Sold for $29.99 on August 4, 2023

Keys @ $1.95

29.99/1.95 = 15.38ish keys

Sales @ 15, 15, 15, 16, 16

Taking 15-16 here