Sale 1:

https://backpack.tf/profiles/76561198435006502#!/compare/1560297600/1562716800

https://backpack.tf/profiles/76561198337734785#!/compare/1562630400/1562716800

QS

Sale 2:

https://backpack.tf/profiles/76561198337734785#!/compare/1566864000/1566950400

https://backpack.tf/profiles/76561198096548224#!/compare/1566864000/1566950400

Sold for 16 keys

Sale 3:

https://backpack.tf/profiles/76561198096548224#!/compare/1566950400/1567036800

https://backpack.tf/profiles/76561198051889174#!/compare/1566777600/1567036800

Sold for 20 keys

Sale 4:

https://backpack.tf/profiles/76561198051889174#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198124241068#!/compare/1567036800/1567123200

Sold for HG Berliner + 2 keys

use there

sale 5:

https://backpack.tf/profiles/76561198124241068#!/compare/1567123200/1567209600

https://backpack.tf/profiles/76561198150524777#!/compare/1567123200/1567209600

Sold with 3 keys for Vivid Belgian

use there, few sales.

Sale 6:

https://backpack.tf/profiles/76561198150524777#!/compare/1567209600/1567296000

https://backpack.tf/profiles/76561198019000176#!/compare/1567209600/1567296000

Keys or Kabuto, can't accurately tell...

Sale 7:

https://backpack.tf/profiles/76561198019000176#!/compare/1567814400/1567900800

https://backpack.tf/profiles/76561198118139141#!/compare/1567814400/1567900800

Bulk

Sale 8:

https://backpack.tf/profiles/76561198118139141#!/compare/1567814400/1567900800

https://backpack.tf/profiles/76561198310264826#!/compare/1567814400/1567900800

Sold for 14 keys

Sale 9:

https://backpack.tf/profiles/76561198310264826#!/compare/1567814400/1567900800

https://backpack.tf/profiles/76561198254822867#!/compare/1567814400/1567900800

Sold for DBD Attendant

use there

Sale 10:

https://backpack.tf/profiles/76561198254822867#!/compare/1568073600/1568246400

https://backpack.tf/profiles/76561198079334270#!/compare/1568073600/1568160000

Untrace

Sale 11:

https://backpack.tf/profiles/76561198080179568#!/compare/1566950400/1567036800

https://backpack.tf/profiles/76561198061594183#!/compare/1567036800/1567123200

Sold for GE Mong + ~1 key in sweets

use there

Sale 12:

https://backpack.tf/profiles/76561198074718149#!/compare/1567900800/1567987200

https://backpack.tf/profiles/76561198044344440#!/compare/1567900800/1567987200

https://backpack.tf/profiles/76561197962529690#!/compare/1567987200/1568160000

https://backpack.tf/profiles/76561198846033293#!/compare/1568073600/1568160000

https://backpack.tf/profiles/76561198079334270#!/compare/1568073600/1568160000

https://backpack.tf/profiles/76561198079334270#!/compare/1568592000/1568678400

Gambling

Sale 13 - 15:

https://marketplace.tf/items/tf2/671;5;u36

$34.01 / $1.84 = 18.48 keys <-- https://backpack.tf/item/1402552528

$30 / $1.82 = 16.48 keys

$38 / $1.80 = 21.11 keys

Total sales @:

14, 16, 16.48, 18.48, 20, 21.11 keys

buyers up to 13 keys,

poorly bumped seller for 23 keys,

calling 14 low,

21 high to balance,

taking 16 - 20 keys.