The Marketplace buyer dumped this to a bot for 245 Keys

https://gladiator.tf/sales?item=Disco%20Beat%20Down%20Soldered%20Sensei&at=2023-02-20T22:56:31.287Z

https://backpack.tf/profiles/76561198140162979#!/compare/1675209600/1675296000 - 221 Keys?

https://backpack.tf/profiles/76561198319114954#!/compare/1678320000/1678406400 - ROF Orb. Fire Rack

https://backpack.tf/profiles/76561198040190735#!/compare/1675123200/1675209600 - 295 Keys

https://backpack.tf/profiles/76561198112709115#!/compare/1677456000/1677715200 - Sold for a DBD Phantom (caps at 400)

https://gladiator.tf/time-machine?item=Disco+Beat+Down+Soldered+Sensei&at=2023-03-01T07%3A28%3A00.000Z

https://mannco.store/item/440-disco-beat-down-unusual-le-party-phantom - The Phantom sold for 408 Keys here

https://backpack.tf/profiles/76561198112709115#!/compare/1677715200/1678060800 - Added <50 for a Morning Glory Salty

The ROF Orb. Fire Rack sold for an Orb. Fire Stash + 168 Keys

https://backpack.tf/profiles/76561198105071091#!/compare/1673481600/1673568000

https://backpack.tf/profiles/76561198516017657#!/compare/1672876800/1674691200 - A Stash sold for a ROF Orb. Fire Bonk Boy

https://backpack.tf/profiles/76561198112709115#!/compare/1674864000/1675036800 - That Stash then added a bunch for a KaW Bonk Boy

It'd be best to exclude this sale for the Rack / the Rack sale here.

With the only sale the Salty has, that seems high considering the seller at 400 Keys at the same time the sale occurred

https://backpack.tf/profiles/76561198112709115#!/compare/1678233600/1678320000 - Spectral KaW Mancer's

https://backpack.tf/profiles/76561198008793871#!/compare/1678492800/1678665600 - The Mancer's added a C9 Boron for a Hellfire Boron

https://backpack.tf/profiles/76561198112709115#!/compare/1678752000/1678838400 - The Hellfire Boron sold for ~490 Keys

https://backpack.tf/profiles/76561198095293350#!/compare/1678752000/1678838400 - It was the Defragmenting + items and the Desert + items above

400 would be a better high end here.