Item 1

https://backpack.tf/item/12991201053

Sale 1

https://backpack.tf/profiles/76561198376885782#!/compare/1686182400/1686355200

https://backpack.tf/profiles/76561198155110999#!/compare/1686268800/1686355200

Can only match a partial amount of keys on seller side, can't say for sure

Item 2

https://backpack.tf/item/12235852163

Sale 2

https://backpack.tf/profiles/76561199090598877#!/compare/1686096000/1686096000

https://backpack.tf/profiles/76561198260308391#!/compare/1685836800/1686096000

Can't load seller inv

Sale 3

https://backpack.tf/profiles/76561198260308391#!/compare/1686614400/1686700800

https://backpack.tf/profiles/76561199003260410#!/compare/1686614400/1686700800

Looks like 15 keys + Strange Festivized Specialized Killstreak Natascha + ~.25 keys in ref

15 + ~1 + .25 = ~16 keys

Item 3

https://backpack.tf/item/8370405261

Sale 4

https://backpack.tf/profiles/76561198123344455#!/compare/1682553600/1689292800

https://backpack.tf/profiles/76561198280693486#!/compare/1691366400/1691452800

Can't load seller inv

Item 4

https://backpack.tf/item/7993687447

Sale 5

https://backpack.tf/profiles/76561198144364323#!/compare/1672790400/1690934400

https://backpack.tf/profiles/76561198075484000#!/compare/1690588800/1692748800

Can't load seller inv

Sale 6

https://backpack.tf/profiles/76561198075484000#!/compare/1690588800/1692748800

https://backpack.tf/profiles/76561198850178158#!/compare/1693180800/1693267200

Can't load selelr inv

Mp.tf

https://marketplace.tf/items/tf2/614;5;u11

$49.99 / $2.01 = ~25 keys (Aug 21)

Total Sales

16, 25

https://imgur.com/a/q86wyYD

19 unsold for quite some time, 25 is high

Taking 16 keys c: