Thanks to Shuffle for the help!

Sale 1:

https://backpack.tf/profiles/76561198212556179#!/compare/1584835200/1584921600

https://backpack.tf/profiles/76561199015532580#!/compare/1584835200/1584921600

Sold for ~10 keys (QS)

sale 2:

https://backpack.tf/profiles/76561199015532580#!/compare/1585180800/1585267200

https://backpack.tf/profiles/76561198252999692#!/compare/1585180800/1585267200

Sold for ~10 keys

sale 3:

https://backpack.tf/profiles/76561198252999692#!/compare/1585180800/1585267200

https://backpack.tf/profiles/76561198141810177#!/compare/1584662400/1585267200

Sold for 10 keys

sale 4:

https://backpack.tf/profiles/76561198141810177#!/compare/1584662400/1585267200

https://backpack.tf/profiles/76561198057412106#!/compare/1585180800/1585267200

Sold with 9 keys for Mallard Norman(21)

Total is 12 keys

sale 5:

https://backpack.tf/profiles/76561198057412106#!/compare/1585267200/1585353600

https://backpack.tf/profiles/76561198322380737#!/compare/1585267200/1585353600

Sold with DP Merryweather(9) for ~21 keys

Total is 12 keys

sale 6:

https://backpack.tf/profiles/76561198322380737#!/compare/1585353600/1585526400

https://backpack.tf/profiles/76561198180186261#!/compare/1585267200/1585353600

Sold with DP Merryweather for KaW Danger

use on Danger

sale 7:

https://backpack.tf/profiles/76561198180186261#!/compare/1588896000/1588982400

https://backpack.tf/profiles/76561198125843939#!/compare/1588896000/1588982400

Sold for ~15 keys in sweets

Total sales @:

10, 10, 10, 12, 12, 15 keys

https://i.imgur.com/97SGNXP.jpg

newly listed seller for ~14 keys,

given sales at 10,

taking 12 - 15 keys

more of Shuffle's info can be found here:

https://backpack.tf/suggestion/5ebb6fe7b5c7dc189c20e67b