Resuggest, let's give it another shot.

Sold for 298 keys + Aztec Warrior = 300 keys

https://backpack.tf/profiles/76561198051259613#!/compare/NaN/1522972800

Sale #1

Sold for a Purple Energy Pyromancer's Mask.

https://backpack.tf/profiles/76561198136616861#!/compare/1520208000/1520380800

https://backpack.tf/profiles/76561198184276866#!/compare/1520294400/1520380800

Taking 165k

Sale #2

Bulk for a Spellbound Galvanized Gibus.

https://backpack.tf/profiles/76561198184276866#!/compare/1521072000/1521158400

https://backpack.tf/profiles/76561198070474543#!/compare/1521072000/1521158400

{Excluding}

Sale #3

Bulk for a Spellbound Executioner.

https://backpack.tf/profiles/76561198070474543#!/compare/1521676800/1521763200

https://backpack.tf/profiles/76561198036445124#!/compare/1521676800/1521763200

{Excluding}

Sale #4

Sold for 209 keys.

https://backpack.tf/profiles/76561198036445124#!/compare/1522195200/1522281600

https://backpack.tf/profiles/76561198051259613#!/compare/1522108800/1522368000

Oh wait, I forgot to call outliers fuck me.

Leaving it open for yet another comment, thanks in advance.