Sale 1:

https://backpack.tf/profiles/76561198183424550#!/compare/1567209600/1567382400

https://backpack.tf/profiles/76561198285107404#!/compare/1565913600/1568073600

Untrace

Sale 2:

https://backpack.tf/profiles/76561198073823378#!/compare/1564012800/1564099200

https://backpack.tf/profiles/76561197995064139#!/compare/1562976000/1564272000

SCM?

Sale 3:

https://backpack.tf/profiles/76561198059957971#!/compare/1564790400/1566777600

https://backpack.tf/profiles/76561198164696014#!/compare/1568764800/1568764800

SCM

sale 4:

https://backpack.tf/profiles/76561198122312868#!/compare/1564099200/1567555200

https://backpack.tf/profiles/76561198075814751#!/compare/1538006400/1566172800

Untrace

Sale 5:

https://backpack.tf/profiles/76561198108152818#!/compare/1565827200/1566345600

https://backpack.tf/profiles/76561198337734785#!/compare/1566086400/1566172800

QS

Sale 6:

https://backpack.tf/profiles/76561198337734785#!/compare/1566691200/1566777600

https://backpack.tf/profiles/76561198968951028#!/compare/1566691200/1566950400

Sold for 18 keys

Sale 7:

https://backpack.tf/profiles/76561198968951028#!/compare/1567123200/1567555200

https://backpack.tf/profiles/76561198363395191#!/compare/1567468800/1567555200

QS

sale 8:

https://backpack.tf/profiles/76561198363395191#!/compare/1568505600/1568592000

https://backpack.tf/profiles/76561198049688103#!/compare/1568419200/1568592000

Sold for 12 keys

sale 9:

https://backpack.tf/profiles/76561198049688103#!/compare/1569974400/1570320000

https://backpack.tf/profiles/76561198171280806#!/compare/1570233600/1570320000

Sold for G Fetti Bone Dome

Bone Dome Mini:

https://backpack.tf/suggestion/5d9d017dd3817223630f7bf0

Suggestion for 12 keys

Sale 10:

https://backpack.tf/profiles/76561198171280806#!/compare/1570320000/1570406400

https://backpack.tf/profiles/76561198334047096#!/compare/1570233600/1570406400

Sold for G Fetti Titanium Pillar

use there

Sale 11:

https://backpack.tf/profiles/76561198334047096#!/compare/1570233600/1570406400

https://backpack.tf/profiles/76561198217891717#!/compare/1570320000/1570406400

Sold for Ch Billy

Billy Mini:

https://backpack.tf/suggestion/5d9d0804d381722a934e7c3f

Suggestion for 15 keys

Sale 12:

https://marketplace.tf/items/tf2/391;5;u61

$41.34 / $1.81 = 22.84 keys

Total sales @:

12, 15, 18, 22.84 keys

buyers up to 9 keys,

month unsold for 20 keys,

calling 24 high,

taking 12 - 18 keys.