https://marketplace.tf/items/tf2/31161;5;u3001

https://backpack.tf/item/9786900084 - Feb 24th

https://backpack.tf/item/10998887615 - April 30th

Couldn’t find the others

$4.35, Feb 9th, 24th, April 27th, & 30th

https://marketplace.tf/items/tf2/5021;6 - keys were:

$1.87, Feb 9th

$1.88, Feb 24th

$1.99, April 27th

$2, April 30th

4.35/1.87 = 2.326, rounds to 2.35 keys

4.35/1.88 = 2.314, rounds to 2.3 keys

4.35/1.99 = 2.186, rounds to 2.2 keys

4.35/2 = 2.175, rounds to 2.2 keys

Other Sales:

#1

https://backpack.tf/profiles/76561199879133525#!/compare/1773014400/1773619200

https://backpack.tf/profiles/76561199860024372#!/compare/1772841600/1773187200

https://backpack.tf/item/13078909464

Untraceable

#2

https://backpack.tf/profiles/76561199860024372#!/compare/1773532800/1773878400

https://backpack.tf/profiles/76561198850274253#!/compare/1773446400/1773532800

https://backpack.tf/item/13078909464

Untraceable, slight bulk

#3

https://backpack.tf/profiles/76561198451874626#!/compare/1773792000/1773964800

https://backpack.tf/profiles/76561198850121720#!/compare/1773878400/1773964800

https://backpack.tf/item/13955281776

Bulk

https://backpack.tf/item/9983993400 - mannco

https://backpack.tf/item/11110094721 - gambled

https://backpack.tf/item/11617445189 - qsstore

https://backpack.tf/item/15475114938 - gambled/skinport

Sellers:

https://i.imgur.com/ngkUl11.png

https://backpack.tf/item/12450572403 - 3 keys

https://backpack.tf/item/9542342523 - 3 keys

https://backpack.tf/item/13955281776 - 3 keys

https://marketplace.tf/items/tf2/31161;5;u3001

https://backpack.tf/item/11034702485 - $7.10

https://backpack.tf/item/9549271776 - $16.99

Sales at:

2.2 (2x)

2.3

2.35

Taking 2.2-2.35 keys.