SALE 1

Unknown

https://backpack.tf/profiles/76561198073209840#!/compare/1557273600/1557360000

https://backpack.tf/profiles/76561198101092551#!/compare/1557273600/1557360000

SALE 2

Unknown, but 5 keys were added to the capotain for something else.

https://backpack.tf/profiles/76561198101092551#!/compare/1558137600/1558224000

https://backpack.tf/profiles/76561198492307574#!/compare/1558051200/1558137600

SALE 3

Sold with sweets adding to about 1.3 keys for stormy impaler

https://backpack.tf/profiles/76561198492307574#!/compare/1558137600/1558224000

https://backpack.tf/profiles/76561198862126261#!/compare/1558137600/1558224000

Impaler is outdated @ 3 months, taking a mini for it.

Taking 22 (buyer price) as there are no other usable sales.

22 - 1.3 = 20.7 rounding to 21 keys

Mini for impaler

Taking a buyers price of 22 for it.

https://gyazo.com/3a8d163bb65e0d64dee8ce370767f442

MINI SALE 1

Not sure

https://backpack.tf/profiles/76561198492307574#!/compare/1558224000/1558396800

https://backpack.tf/profiles/76561198905234101#!/compare/1556150400/1558915200

Classifieds at the time at the time of making this suggestion.

https://gyazo.com/fbe3b640f54317b43a118ec45a7cf775

Taking 21 keys here.