Item 1

https://backpack.tf/item/11871714385

Sale #1

Untraceable-

Seller: https://backpack.tf/profiles/76561199113899944#!/compare/1683676800/1683763200

Buyer: https://backpack.tf/profiles/76561198093501381#!/compare/1683763200/1683849600

Sale #2

Untraceable-

Seller: https://backpack.tf/profiles/76561198093501381#!/compare/1684108800/1684627200

Buyer: https://backpack.tf/profiles/76561198304053926#!/compare/1667347200/1686355200

Marketplace.tf Sales

https://marketplace.tf/items/tf2/1115;5;u3098

MP.TF Sale #1

Sold for $24.99 on May 20, 2023

Keys @ $2.02

24.99/2.02 = 12.37ish keys

MP.TF Sale #2

Sold for $24.99 on July 18, 2023

Keys @ $1.97

24.99/1.97 = 12.69ish keys

MP.TF Sale #3

Sold for $24.99 on July 19, 2023

Keys @ $1.97

24.99/1.97 = 12.69ish keys

MP.TF Sale #4

Sold for $29.99 on August 2, 2023

Keys @ $1.95

29.99/1.95 = 15.38ish keys

Sales @ 12, 13, 13, 15

Taking 12-13 here