Item 1

https://backpack.tf/item/7957396245

Bot dump/untrace

Item 2

https://backpack.tf/item/15978958525

Sale 1

https://ibb.co/0pdVYZPk

21 keys 45.55 ref

~22

Sale 2

https://ibb.co/XrWwtQDh

https://ibb.co/5XSKR4WG

$59.73 @ Jun 21 - $2.38/key

~25

Item 3

Sale 1

https://backpack.tf/item/17070970884

https://backpack.tf/profiles/76561198062747535#!/compare/1778112000/1778198400

https://backpack.tf/profiles/76561198122810487#!/compare/1771459200/1779667200

Untrace

Sale 2

https://ibb.co/k63YQCCX

https://ibb.co/kVRn9hTN

$69.78/29.31 keys

(owner untraced + no proof of sale, but would be excluded anyway for reasons below)

Item 4

https://backpack.tf/item/5296499169

https://marketplace.tf/items/tf2/616;5;u57

$67.67 @ Apr 24 - use $2.00/key

~33.84

~34

Sellers

BP - https://ibb.co/tMtgZSJY - 27 key unsold for a year (all movements are between QS bots: https://backpack.tf/item/8794866854)

MP - https://ibb.co/Y45Wd6v4 - $67.67 for 1+ years

SCM - https://ibb.co/v4Mg9tD4 - none

22, 25, 34

Buyer at 22+

Taking 25 flat