Lets try this again. Updated suggestion.

1/3. Other owners inactive for 4+ months, so technically 1/1.

Purchased for 55 pure + Stormy Storm One-Man Army. Buy orders at 18.5, purchased for 20 keys.

Purchase Proof: https://imgur.com/a/mn2AREM

Proof One Man Army bought at 20 keys and buyout of original hat truly 75 rather than 100 (thanks Vege for help) : https://imgur.com/a/FsrXnO1

Previous Purchases: 62 keys Looks like 61k + strange handsome devil (so basically 62k):

https://backpack.tf/profiles/76561198244962432#!/compare/1626307200/1627862400

https://backpack.tf/profiles/76561198065613492#!/compare/1626393600/1626652800