2 sales in date, first was full pure, 350 flat:

https://backpack.tf/profiles/76561198090366552#!/compare/1641427200/1641600000

History: https://backpack.tf/item/5266718063

Second sale was a CTF logo Rack and 73 Pure:

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

History: https://backpack.tf/item/5268479652

Racks have B/O of 237:

https://backpack.tf/stats/Unusual/Exquisite%20Rack/Tradable/Craftable/11

Mini's for the Rack:

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 here)

Problem is there's also a clean seller at 290 atm, so 300 may look a bit high (but I think it's fine for a mini).

So the second sale becomes:

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

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

https://gladiator.tf/listings/61a6cd3a328f39dbba1a1461

new sale 500 pure:

https://backpack.tf/profiles/76561198090366552#!/compare/1645660800/1645920000