Resuggestion, thanks to Shuffle Spy for the info!

Sale 1:

https://backpack.tf/profiles/76561198122393901#!/compare/1581897600/1583366400

https://backpack.tf/profiles/76561198886850124#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198820335875#!/compare/1581897600/1581984000

https://backpack.tf/profiles/76561198808823742#!/compare/1581292800/1581984000

https://backpack.tf/profiles/76561198087494715#!/compare/1581897600/1581984000

https://backpack.tf/profiles/76561198037674114#!/compare/1581724800/1581984000

https://backpack.tf/profiles/76561198020673987#!/compare/1587254400/1587081600

https://backpack.tf/profiles/76561198850274253#!/compare/1587859200/1587945600

Untrace / gambling / bulk

sale 2:

https://backpack.tf/profiles/76561198065921725#!/compare/1584230400/1584316800

https://backpack.tf/profiles/76561198057412106#!/compare/1584230400/1584316800

Sold for KaW Danger + DP Tylorean(11.5)

Danger Mini:

https://backpack.tf/suggestion/5ed869a6d89d69165f146bad

Suggestion for 23 keys

Total is 34.5 keys

sale 3:

https://backpack.tf/profiles/76561198057412106#!/compare/1584316800/1584403200

https://backpack.tf/profiles/76561198106206016#!/compare/1584316800/1584403200

Sold with 4 keys for KaW KE(30) + Searing Handcraft

Handcraft Mini:

https://backpack.tf/suggestion/5ebb6ec8bfe82e62cc177c2e

Suggestion for 12.5 keys

Total is 42.5 keys

sale 4:

https://backpack.tf/profiles/76561198106206016#!/compare/1584403200/1584489600

https://backpack.tf/profiles/76561198072998203#!/compare/1584230400/1584489600

sold for TW Hong Kong + 1 key

Hong mini:

https://backpack.tf/suggestion/5ebb5da9e1a09d71a46ac3c5

Suggestion for 30 keys

Total is 31 keys

https://bot.tf/stats/listings/4J9PVKJ7

unsold for ~1 week at 30 keys,

https://backpack.tf/item/8026770031

Shuffle's Part:

Johan's listing sold for 30 Keys

https://backpack.tf/profiles/76561198850274253#!/compare/1590105600/1590192000

New seller at 30 Keys as well

https://imgur.com/a/2OsN5XK

https://backpack.tf/item/7172998276

Since the person who paid 43 resold for 31, I'd exclude both and use the Danger sale and the 30 Key sale here instead.

The multiple sellers below 43 would support that being excluded regardless.

Taking 30 - 35 keys