Sale 1:

https://backpack.tf/profiles/76561198271670087#!/compare/1575936000/1576022400

https://backpack.tf/profiles/76561198080179568#!/compare/1575936000/1576022400

QS

sale 2:

https://backpack.tf/profiles/76561198080179568#!/compare/1576108800/1576195200

https://backpack.tf/profiles/76561198872628170#!/compare/1576108800/1576195200

https://backpack.tf/profiles/76561198964865654#!/compare/1576108800/1576886400

Bulk?

Sale 3:

https://backpack.tf/profiles/76561197964171516#!/compare/1578268800/1578441600

https://backpack.tf/profiles/76561198305979607#!/compare/1577577600/1578441600

Sold for 10 keys

Sale 4:

https://backpack.tf/profiles/76561198248320210#!/compare/1579132800/1581811200

https://backpack.tf/profiles/76561198375204015#!/compare/1578614400/1579132800

Sold for CPS Crack + MW Fresh Brew

Crack Mini:

https://backpack.tf/suggestion/5e5ae2db24686e3aaf72d3d4

Suggestion at 8 keys

ends up above unsold at 10 keys by buyers on Fresh Brew.

https://bot.tf/stats/listings/425EQJEQ

Sale 5:

https://backpack.tf/profiles/76561198375204015#!/compare/1580342400/1580428800

https://backpack.tf/profiles/76561198324700619#!/compare/1580342400/1580428800

Bulk / low

Sale 6:

https://backpack.tf/profiles/76561198324700619#!/compare/1580428800/1580515200

https://backpack.tf/profiles/76561198035005297#!/compare/1579392000/1581033600

Untrace

Sale 7:

https://backpack.tf/profiles/76561198841279602#!/compare/1578096000/1578182400

https://backpack.tf/profiles/76561198381033764#!/compare/1578096000/1578441600

Sold for 8 keys

sale 8:

https://backpack.tf/profiles/76561198381033764#!/compare/1578441600/1578787200

https://backpack.tf/profiles/76561198330581869#!/compare/1578700800/1578787200

Bulky

Sale 9:

https://backpack.tf/profiles/76561198330581869#!/compare/1578787200/1578873600

https://backpack.tf/profiles/76561198313704489#!/compare/1578787200/1578873600

Bulk

Sale 10:

https://backpack.tf/profiles/76561198313704489#!/compare/1579305600/1579392000

https://backpack.tf/profiles/76561198341171690#!/compare/1579305600/1579392000

QS

Sale 11:

https://backpack.tf/profiles/76561198341171690#!/compare/1580169600/1580256000

https://backpack.tf/profiles/76561198076719167#!/compare/1486425600/1581811200

Untrace

Sale 12:

https://marketplace.tf/items/tf2/31024;5;u30

$13.99 / $1.71 = 8.18 keys

Total sales @:

8, 8, 10 keys

4 month unsold at 10 keys,

given sale 4 is higher than 10,

taking 8 - 10 keys.