Sale 1:

https://backpack.tf/profiles/76561198867230590#!/compare/1586822400/1586908800

https://backpack.tf/profiles/76561198062287671#!/compare/1586822400/1586908800

Sold for 17 keys

Sale 2:

https://backpack.tf/profiles/76561198204709704#!/compare/1586995200/1587254400

https://backpack.tf/profiles/76561198137360052#!/compare/1579564800/1587686400

Untrace

sale 3:

https://backpack.tf/profiles/76561198137360052#!/compare/1587686400/1588118400

https://backpack.tf/profiles/76561198192602363#!/compare/1587945600/1588032000

Sold for Smoking Rotation(21.5)

sale 4:

https://backpack.tf/profiles/76561198192602363#!/compare/1588809600/1588982400

https://backpack.tf/profiles/76561198044254515#!/compare/1588896000/1589068800

untrace

sale 5:

https://backpack.tf/profiles/76561198352542792#!/compare/1584489600/1584576000

https://backpack.tf/profiles/76561198817283610#!/compare/1581552000/1584662400

untrace

sale 6:

https://backpack.tf/profiles/76561198158035421#!/compare/1584489600/1584662400

https://backpack.tf/profiles/76561198338357224#!/compare/1584576000/1585008000

Sold for 17 keys

sale 7:

https://backpack.tf/profiles/76561198308772967#!/compare/1583193600/1583280000

https://backpack.tf/profiles/76561199001511205#!/compare/1583280000/1583712000

Sold for ~17 keys

sale 8:

https://backpack.tf/profiles/76561199001511205#!/compare/1583712000/1583798400

https://backpack.tf/profiles/76561198850274253#!/compare/1583712000/1583798400

QS

sale 9:

https://backpack.tf/profiles/76561198339945463#!/compare/1586822400/1586908800

https://backpack.tf/profiles/76561198186666399#!/compare/1582329600/1586908800

Sold for 17 keys

Sale 10:

https://backpack.tf/profiles/76561198272353085#!/compare/1583712000/1583971200

https://backpack.tf/profiles/76561198055475812#!/compare/1583798400/1583971200

Untrace

sale 11:

https://backpack.tf/profiles/76561198055475812#!/compare/1586476800/1586995200

https://backpack.tf/profiles/76561198100928052#!/compare/1586476800/1586563200

Bulk

sale 12:

https://backpack.tf/profiles/76561198100928052#!/compare/1588291200/1588377600

https://backpack.tf/profiles/76561198237295548#!/compare/1588291200/1588377600

Sold with 3 keys for CTFL Pithy

use there

sale 13:

https://backpack.tf/profiles/76561198237295548#!/compare/1588291200/1588377600

https://backpack.tf/profiles/76561198127672775#!/compare/1588204800/1588550400

Sold for 9 keys

Sale 14:

https://backpack.tf/profiles/76561198127672775#!/compare/1589587200/1589760000

https://backpack.tf/profiles/76561198058356352#!/compare/1589673600/1589760000

Bulk

sale 15:

https://marketplace.tf/items/tf2/30977;5;u29

$33.99 / $1.72 = 19.76 keys

$30 / $1.72 = 17.44 keys

total sales @:

9, 17, 17, 17, 17, 17, 20, 21.5 keys

buyers up to 15 keys,

sellers at 17 keys,

taking 17 - 20 keys