Sale 1:

https://backpack.tf/profiles/76561197997618876#!/compare/1566864000/1566950400

https://backpack.tf/profiles/76561198060733816#!/compare/1566950400/1567036800

Bulky

Sale 2:

https://backpack.tf/profiles/76561198094366866#!/compare/1566345600/1566777600

https://backpack.tf/profiles/76561198116633269#!/compare/1512691200/1570147200

Untrace

Sale 3:

https://backpack.tf/profiles/76561198027768897#!/compare/1567641600/1567728000

https://backpack.tf/profiles/76561198152643499#!/compare/1567641600/1567728000

Sold for Aces Dragonborn

Dragon Mini:

https://backpack.tf/suggestion/5dca217bd3817252a972de58

suggestion for 9.5 keys

Sale 4:

https://backpack.tf/profiles/76561198152643499#!/compare/1567728000/1573344000

https://backpack.tf/profiles/76561198944452805#!/compare/1570233600/1570320000

Sold for TW Nano + negligible sweets

use there

Sale 5:

https://backpack.tf/profiles/76561198211421095#!/compare/1570665600/1570752000

https://backpack.tf/profiles/76561198113584226#!/compare/1553644800/1570838400

https://backpack.tf/profiles/76561198120632586#!/compare/1570665600/1570838400

Uncertain

sale 6:

https://backpack.tf/profiles/76561198810674660#!/compare/1565827200/1565913600

https://backpack.tf/profiles/76561198323565601#!/compare/1565827200/1565913600

QS

sale 7:

https://backpack.tf/profiles/76561198089253101#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198110011480#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198012537041#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198138105768#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198273865118#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198333524309#!/compare/1566604800/1566691200

https://backpack.tf/profiles/76561198205939253#!/compare/1566604800/1566691200

untrace / gambling

Sale 8:

https://backpack.tf/profiles/76561198060458887#!/compare/1566691200/1566777600

https://backpack.tf/profiles/76561198153536726#!/compare/1566691200/1566777600

Keys

sale 9:

https://backpack.tf/profiles/76561198153536726#!/compare/1566777600/1566864000

https://backpack.tf/profiles/76561198164315915#!/compare/1566777600/1566950400

Sold with ~4 keys for DBD Warhood(16)

Total is 12 keys

Sale 10:

https://backpack.tf/profiles/76561198164315915#!/compare/1567468800/1567555200

https://backpack.tf/profiles/76561198118618694#!/compare/1567382400/1567555200

Bulk

sale 11:

https://backpack.tf/profiles/76561198118618694#!/compare/1567641600/1567728000

https://backpack.tf/profiles/76561198193420686#!/compare/1566864000/1567728000

Untrace...

Sale 12:

https://backpack.tf/profiles/76561198193420686#!/compare/1567728000/1567900800

https://backpack.tf/profiles/76561198827340273#!/compare/1567814400/1567900800

Untrace

Total sales @:

9.5, 12 keys

2 month unsold for 12 keys,

newish seller for 10 keys,

lets take 10 - 12 keys.