Resuggesting, thank you Shuffle!

Sale 1: Unknown

https://backpack.tf/profiles/76561198040280241#!/compare/1588636800/1588809600

https://backpack.tf/profiles/76561198153088409#!/compare/1588550400/1588896000

Sale 2: Sold for Scorching Flames Killer's Exclusive (390 keys) + 11 keys

https://backpack.tf/profiles/76561198049072796#!/compare/1588550400/1588723200

https://backpack.tf/profiles/76561198065349229#!/compare/1588464000/1588809600

390 + 11 = 401 rounding to 400 keys

Sale 3: Sold for - 375 Keys in stranges + Sparkling Lights Citizen Cane (Open suggestion at 37.5 keys)

https://backpack.tf/profiles/76561198153088409#!/compare/1590710400/1590883200

https://backpack.tf/profiles/76561198071983249#!/compare/1590364800/1590883200

375 + 37.5 = 412.5 rounding to 410 keys

Mini for the Cane:

https://backpack.tf/suggestion/5ed89a8c6709233b1a38545d

Sales are at 400 and 410.

Taking a range of 400-410 keys here.