Sale 1:

https://backpack.tf/profiles/76561198119523579#!/compare/1567641600/1568073600

https://backpack.tf/profiles/76561198400558905#!/compare/1567728000/1568073600

Sold for 7 keys

Sale 2:

https://backpack.tf/profiles/76561198115696625#!/compare/1569888000/1570147200

https://backpack.tf/profiles/76561198323565601#!/compare/1570060800/1570147200

Sold for 6 keys (QS)

Sale 3:

https://backpack.tf/profiles/76561198115721685#!/compare/1567382400/1567728000

https://backpack.tf/profiles/76561198400792652#!/compare/1567641600/1567728000

Sold for ~8 keys

Sale 4:

https://backpack.tf/profiles/76561198400792652#!/compare/1567728000/1567900800

https://backpack.tf/profiles/76561198326224813#!/compare/1567814400/1567900800

Sold with 2 keys for KaW Baker

use there

Sale 5:

https://backpack.tf/profiles/76561198326224813#!/compare/1568246400/1568505600

https://backpack.tf/profiles/76561198121830870#!/compare/1568160000/1568246400

Sold for ~6 keys

Sale 6:

https://backpack.tf/profiles/76561198121830870#!/compare/1568246400/1568332800

https://backpack.tf/profiles/76561198323565601#!/compare/1568246400/1568332800

QS

Sale 7:

https://backpack.tf/profiles/76561197996869097#!/compare/1563667200/1563840000

https://backpack.tf/profiles/76561198165844247#!/compare/1559433600/1566172800

untrace

Sale 8:

https://backpack.tf/profiles/76561198165844247#!/compare/1566172800/1566691200

https://backpack.tf/profiles/76561198111828907#!/compare/1566086400/1566259200

sold for 6 keys

Sale 9:

https://backpack.tf/profiles/76561198163251147#!/compare/1568592000/1568678400

https://backpack.tf/profiles/76561198323565601#!/compare/1568592000/1568678400

QS

Sale 10:

https://backpack.tf/profiles/76561198448979578#!/compare/1567814400/1568505600

https://backpack.tf/profiles/76561198183507493#!/compare/1568160000/1568505600

https://backpack.tf/profiles/76561197994697258#!/compare/1568678400/1568764800

Untrace

Sale 11:

https://backpack.tf/profiles/76561198365213305#!/compare/1569369600/1569456000

https://backpack.tf/profiles/76561198112252090#!/compare/1569283200/1569369600

untrace

Sale 12:

https://backpack.tf/profiles/76561198112252090#!/compare/1569369600/1569974400

https://backpack.tf/profiles/76561198006544512#!/compare/1569283200/1569369600

QS

Sale 13:

https://backpack.tf/profiles/76561198363395191#!/compare/1564185600/1564272000

https://backpack.tf/profiles/76561198392969890#!/compare/1564185600/1564272000

Sold for ~8 keys

Sale 14:

https://backpack.tf/profiles/76561198392969890#!/compare/1564358400/1564444800

https://backpack.tf/profiles/76561198012537041#!/compare/1564012800/1564444800

https://backpack.tf/profiles/76561198374431966#!/compare/1564358400/1564444800

https://backpack.tf/profiles/76561198419584303#!/compare/1564099200/1564444800

https://backpack.tf/profiles/76561198134546405#!/compare/1564358400/1564444800

https://backpack.tf/profiles/76561198100248168#!/compare/1564358400/1564444800

https://backpack.tf/profiles/76561198134546405#!/compare/1564444800/1564531200

https://backpack.tf/profiles/76561198164281960#!/compare/1564012800/1564531200

https://backpack.tf/profiles/76561198838118682#!/compare/1564444800/1564531200

https://backpack.tf/profiles/76561198427564788#!/compare/1564444800/1564617600

https://backpack.tf/profiles/76561198323565601#!/compare/1564531200/1564617600

Gambling

Sale 15:

https://backpack.tf/profiles/76561198089253101#!/compare/1565395200/1565481600

https://backpack.tf/profiles/76561198104368241#!/compare/1565481600/1565827200

Bulk

Sale 16:

https://marketplace.tf/items/tf2/30984;5;u59

$16.26 / $1.83 = 8.89 keys (On the verge of outdated)

$16.2 / $1.80 = 9.00 keys <-- https://backpack.tf/item/7713579834

$16.2 / $1.81 = 8.95 keys

$15.5 / $1.82 = 8.52 keys

$15.5 / $1.83 = 8.47 keys

total sales @:

6, 6, 7, 8, 8, 8.47, 8.52, 8.89, 8.95, 9 keys

buyers up to 6 keys,

unsold for ~3 weeks for 7 keys,

calling 6 low,

taking 7 - 9 keys.