Sale 1:

https://backpack.tf/profiles/76561198950621219#!/compare/1583280000/1583366400

https://backpack.tf/profiles/76561198155386309#!/compare/1583280000/1583366400

https://backpack.tf/profiles/76561198359794534#!/compare/1583280000/1583366400

Untrace

sale 2:

https://backpack.tf/profiles/76561198359794534#!/compare/1584489600/1584921600

https://backpack.tf/profiles/76561198071221442#!/compare/1584748800/1584835200

Sold for ~5 keys

sale 3:

https://backpack.tf/profiles/76561198071221442#!/compare/1584748800/1584835200

https://backpack.tf/profiles/76561198114312016#!/compare/1584748800/1584835200

Sold for ~6.5 keys

sale 4:

https://backpack.tf/profiles/76561198114312016#!/compare/1584835200/1584921600

https://backpack.tf/profiles/76561198994319359#!/compare/1584748800/1584835200

Untrace

sale 5:

https://backpack.tf/profiles/76561198994319359#!/compare/1585872000/1586217600

https://backpack.tf/profiles/76561198089837170#!/compare/1585699200/1586217600

Sold for N&B Polar

use there

sale 6:

https://backpack.tf/profiles/76561198083134207#!/compare/1586476800/1586563200

https://backpack.tf/profiles/76561198879945899#!/compare/1586822400/1586908800

Untrace

sale 7:

https://backpack.tf/profiles/76561198045473872#!/compare/1581552000/1583366400

https://backpack.tf/profiles/76561198184638537#!/compare/1582070400/1583366400

Untrace

sale 8:

https://marketplace.tf/items/tf2/30360;5;u61

$12.11 / $1.75 = 6.92 keys

$17.32 / $1.77 = 9.79 keys

$15.99 / $1.68 = 9.52 keys

$14.00 / $1.69 = 8.28 keys

$12.11 / $1.69 = 7.17 keys

$17.8 / $1.75 = 10.17 keys

Total sales @:

5, 6.5, 7, 7, 8.5, 9.5, 10, 10 keys

Buyers up to ~6.5 keys,

taking 7 - 10 keys.