https://backpack.tf/profiles/76561198110575081#!/compare/1634428800/1634515200 - 25 Keys

https://backpack.tf/profiles/76561198243128080#!/compare/1634515200/1634601600 - 30 Keys

https://backpack.tf/profiles/76561197963500354#!/compare/1634256000/1634342400 - 40 Keys

https://backpack.tf/profiles/76561198078435541#!/compare/1637798400/1637884800 - Bulk

https://backpack.tf/profiles/76561198132113819#!/compare/1638403200/1638489600 - No Mini for the Paint; Knife's only sale is 25 Keys

https://imgur.com/a/5obVGdI - Seller at 33 Keys

Given 25 and 30 both sold in a day max, both can be excluded as quicksells. 33 to 40 would work here.

Gonna close this due to lack of response to Lemons' comment.

Freebieeeeeee by shuffle thonks

"Gonna close this due to lack of response to Lemons' comment."

forgot to remove this while copying shuffle's freebie , my apologies for that