I'm taking over as I do not fail.

Sale 1: https://backpack.tf/profiles/76561198075581725#!/compare/1632873600/1632960000

https://backpack.tf/profiles/76561197982127154#!/compare/1632873600/1632960000

Bulk.

Sale 2: https://backpack.tf/profiles/76561197982127154#!/compare/1632873600/1632960000

https://backpack.tf/profiles/76561198220098345#!/compare/1632873600/1632960000

250 pure.

Sale 3: https://backpack.tf/profiles/76561198220098345#!/compare/1632960000/1633046400

https://backpack.tf/profiles/76561198385727483#!/compare/1632960000/1633046400

Sold for a Green Black Hole Troublemaker's Tossle Cap (199 keys) + a The Dark Doorway Mann-O-War (33 keys at the time of the sale) + a Disco Beat Down Berliner's Bucket Helm (buyers at 24 keys: https://i.imgur.com/9cVAbdh.png)

199 + 33 + 24 = 256, roughly, will fit in the range.

Mini for the Berliner's:

Sale 4: https://backpack.tf/profiles/76561198302622358#!/compare/1631404800/1631491200

https://backpack.tf/profiles/76561198057452720#!/compare/1631232000/1631491200

Bulk.

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Additional by Blaze:

https://backpack.tf/suggestion/6156ff61673ab91cbb5f1782 - the Disco Beat Down Berliner's Bucket Helm might be a bit low here now and that suggestion will need to be re-suggested

https://backpack.tf/profiles/76561197974567147#!/compare/1636416000/1636502400

https://backpack.tf/profiles/76561198095022965#!/compare/1636329600/1636502400

https://gladiator.tf/listings/618bb2820c1eb740e42b9f1b - sold with Taunt: Mannrobics for Chiroptera Venenata Strontium Stove Pipe + Vexed Volcanics Semi-tame Trapper's Hat = 191 keys

https://backpack.tf/profiles/76561198927172159#!/compare/1635552000/1635638400

https://backpack.tf/profiles/76561197974567147#!/compare/1635552000/1635638400

https://gladiator.tf/listings/617e70ecb3a17ac3e8e4ea3c - sold for Harvest Moon Prancer's Pride + Winter Spirit Taunt: Skullcracker + Orbiting Fire Crone's Dome + Taunt: Rock, Paper, Scissors = 278, buyout was 275

https://backpack.tf/profiles/76561198200834423#!/compare/1634342400/1634428800

https://backpack.tf/profiles/76561198927172159#!/compare/1634256000/1634342400 - bulk

https://backpack.tf/profiles/76561198385727483#!/compare/1633651200/1633824000

https://gladiator.tf/listings/616089ea44128c9b834cd151 - sold for Nuts n' Bolts Antlers + Bill's Hat + Strange Bruiser's Bandanna = 348 keys

https://backpack.tf/profiles/76561198057452720#!/compare/1633478400/1633564800

https://backpack.tf/profiles/76561198077505109#!/compare/1633478400/1633564800 - bulk

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Mini for the Prancer's: https://backpack.tf/suggestion/61abe48e139b0a4e0d21baa2

Mini for the Crone's: https://backpack.tf/suggestion/61abe479b742446aab18cf30

Mini for the Skullcracker:

Sale 1: https://backpack.tf/profiles/76561198088822281#!/compare/1632528000/1632614400

https://backpack.tf/profiles/76561197974567147#!/compare/1632614400/1632700800

33 pure?

Sale 2: https://backpack.tf/profiles/76561198927172159#!/compare/1636588800/1636675200

https://backpack.tf/profiles/76561198071200441#!/compare/1636588800/1636675200

Sold for a Spectral Swirl Taunt: Skullcracker (26 keys) + ~15 in adds

26 + 15 = 41, buyout was 40: https://gladiator.tf/listings/618d972664f881a44ba872bd

Mini for the other Skullcracker: https://backpack.tf/suggestion/61abe098a12094472e1990e6

Classies: https://i.imgur.com/Dhd8IJx.png. Seller at 35. Taking 33-40 (~37) as a non-suggestion mini.

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Classies: https://i.imgur.com/DRK9eM3.png. Sales: 191, 250, ~256, 275 and 348. Taking 250-275.