Freebie thanks to Shufflespy

https://backpack.tf/item/8197264804

Sale 1) Sold for $350 when Keys were ~$1.96 each

https://marketplace.tf/items/tf2/31059;5;u123

350 / 1.96 = 178.57, which can be rounded to 180 Keys

Sale 2) Sold + 25 Keys for a Duped Darkblaze Triboniophorus Tyrannus (225 Keys)

https://backpack.tf/profiles/76561198142129821#!/compare/1607990400/1608163200

225 - 25 = 200 Keys

Tyrannus Mini

https://backpack.tf/suggestion/5fff822aa2b7af42d846ce7f - 225 Keys

Sale 3) Sold + Strange Fifth Dimension Punk's Pomp (135 Keys) for a Knifestorm Flipped Trilby + 50 Keys

https://backpack.tf/profiles/76561198142129821#!/compare/1608508800/1608595200

Using for the Trilby.