History 1: https://backpack.tf/item/8036993474

Didn't actually sell on Marketplace.tf

Compare doesn't provide anything useful

https://backpack.tf/profiles/76561198289040457#!/compare/1614211200/1614297600

Other sales are tradebacks

History 2: https://backpack.tf/item/7997184270

Untraceable:

https://backpack.tf/profiles/76561198061570215#!/compare/1617840000/1618790400

https://backpack.tf/profiles/76561197978044618#!/compare/1616025600/1619654400

History 3: https://backpack.tf/item/7977243407

Tradebacks, most likely gambling

Untraceable/Bulk:

https://backpack.tf/profiles/76561198350879574#!/compare/1612051200/1612137600

https://backpack.tf/profiles/76561199004492301#!/compare/1611878400/1612137600

Untraceable:

https://backpack.tf/profiles/76561199004492301#!/compare/1611878400/1612137600

https://backpack.tf/profiles/76561199093715679#!/compare/1612137600/1612224000

Dumped to a bot:

https://backpack.tf/profiles/76561199093715679#!/compare/1612224000/1612310400

https://backpack.tf/profiles/76561198453530349#!/compare/1612224000/1612310400

Untraceable:

https://backpack.tf/profiles/76561198453530349#!/compare/1612224000/1612310400

https://backpack.tf/profiles/76561198068786753#!/compare/1612137600/1612310400

Dumped to Quicksell.Store:

https://backpack.tf/profiles/76561198068786753#!/compare/1613001600/1614038400

https://backpack.tf/profiles/76561199111073161#!/compare/1612915200/1613001600

Sold on Marketplace.tf: https://marketplace.tf/items/tf2/31041;5;u10

April 5: $59.99/2.14=28.03 ~28 keys

Taking 28 flat

New sale: https://backpack.tf/item/10117074186

Untraceable:

https://backpack.tf/profiles/76561198850121720#!/compare/1620432000/1620518400

https://backpack.tf/profiles/76561198014031869#!/compare/1620432000/1620518400

Quicksell.Store's buyout was 26 keys https://gladiator.tf/listings/6096a72a70f568705aec4713

I'll try asking the buyer about the sale since I can't see any matching keys