Whoa.

Sale 1: Sold for 150 keys

https://backpack.tf/profiles/76561198371355837#!/compare/1587081600/1587340800

https://backpack.tf/profiles/76561198362065918#!/compare/1587254400/1587340800

Duped sale

Sale 1: Sold for $279 on April 23, 2020

https://marketplace.tf/items/tf2/213;5;u38

$279 / $1.77 = 157.62 rounding to 158 keys

However, the buyer is now selling the hat for quite a bit less than for the purchase.

https://gyazo.com/353075d5942ddc27e51e8eb8aacb6cf9

Two sales, one at 150 and one at 158, however, the duped seller is selling it for far less, as well as the clean seller selling it for less than 158, taking 150 keys here.