Shuffle Spy:

https://backpack.tf/profiles/76561198140162979#!/compare/1642204800/1642291200 - 260 Keys

If a duped sale is lower than a clean sale, don't include it in a range. 260 flat would work since 300 is indeed too high here.

https://backpack.tf/item/207506722

https://backpack.tf/profiles/76561198159464344#!/compare/1636934400/1637020800

https://backpack.tf/profiles/76561198140162979#!/compare/1636934400/1637020800

Untrace/Bulk

https://backpack.tf/item/3009692077

https://backpack.tf/profiles/76561198097499917#!/compare/1634169600/1634256000

https://backpack.tf/profiles/76561198311297599#!/compare/1634169600/1634256000

https://gladiator.tf/listings/6167539c42880da98235c8a3

260 keys + Viridescent Peeper Twisted Topper (48 key buy orders) = 308, caps at 300 key B/O

https://backpack.tf/profiles/76561198311297599#!/compare/1637798400/1637971200

https://backpack.tf/profiles/76561198210673328#!/compare/1637971200/1638057600

Bulk for Time Warp Texas Ten Gallon

https://backpack.tf/profiles/76561198210673328#!/compare/1638316800/1638403200

https://backpack.tf/profiles/76561198275478002#!/compare/1638230400/1638316800

Upgrade to SI Gaze (being used there)

https://backpack.tf/item/658042230 - Dupe

https://backpack.tf/profiles/76561197982127154#!/compare/1637280000/1637366400

https://backpack.tf/profiles/76561198157004525#!/compare/1637280000/1637366400

Circling TF Logo Reggaelator (dumped after for ~24 keys https://backpack.tf/profiles/76561197982127154#!/compare/1637452800/1637539200) + Burning Flames Full Metal Drill Hat (75 keys, dumped for 70 keys https://backpack.tf/profiles/76561197982127154#!/compare/1637366400/1637452800) + Green Energy A Hat to Kill For (older mini for 71 keys, also dumped for ~71 keys https://backpack.tf/profiles/76561197982127154#!/compare/1637452800/1637539200) + 65 keys = 235 keys or 230

https://backpack.tf/profiles/76561198157004525#!/compare/1637798400/1638144000

https://backpack.tf/profiles/76561198205338192#!/compare/1637712000/1637798400

Upgrade to Burning Reggaelator, use there

https://backpack.tf/profiles/76561198205338192#!/compare/1638748800/1638835200

Maybe this is 252? I can't decipher the rest of the history

260 flat as suggested.