Resuggest to include a brand new sale (Thx Xergoyf)

History 1: https://backpack.tf/item/8403319803

Untraceable sale:

https://backpack.tf/profiles/76561198061376237#!/compare/1601164800/1601251200

https://backpack.tf/profiles/76561198197338561#!/compare/1600992000/1601942400

History 2: https://backpack.tf/item/8382415388

Sold on Marketplace.tf October 29 2020

History 3: https://backpack.tf/item/8361301371

Sold on marketplace on August 31 2020 (I can tell because "last seen on August 26", no waiy it could be the August 12 sale

Marketplace.tf sales:

(Untraceable) August 12 2020: $65.99/1.84=35.86 keys ~36

No buyout

(History 3) August 31 2020: $50/1.86=26.88 keys ~27

No buyout

(History 2) October 29 2020: $64.99/1.82= 35.70 keys ~36

Buyout was 30 keys so capping at 30 https://imgur.com/a/ES6FYgU

36 looks like an outlier, going 27-30