Sale 1:

https://backpack.tf/profiles/76561198370568759#!/compare/1512432000/1579046400

https://backpack.tf/profiles/76561198237338144#!/compare/1582934400/1583539200

SCM

Sale 2:

https://backpack.tf/profiles/76561198830746068#!/compare/1580515200/1580774400

https://backpack.tf/profiles/76561198296969563#!/compare/1580428800/1581206400

Keys

Sale 3:

https://backpack.tf/profiles/76561198296969563#!/compare/1581206400/1581552000

https://backpack.tf/profiles/76561198153830377#!/compare/1581120000/1581206400

Sold with ~5 keys in sweets for Bubbling Norsemann + ~1 key in sweets

use there

Sale 4:

https://backpack.tf/profiles/76561198095697847#!/compare/1581120000/1581206400

https://backpack.tf/profiles/76561198153830377#!/compare/1581120000/1581206400

Untrace

Sale 5:

https://backpack.tf/profiles/76561198313704489#!/compare/1581379200/1581465600

https://backpack.tf/profiles/76561198136810646#!/compare/1581379200/1581465600

Sold with KaW Beret for C9 Ballcap

bulky

Sale 6:

https://backpack.tf/profiles/76561198136810646#!/compare/1581552000/1581638400

https://backpack.tf/profiles/76561198049884052#!/compare/1581552000/1581638400

Bulk

Sale 7:

https://backpack.tf/profiles/76561198049884052#!/compare/1581638400/1581724800

https://backpack.tf/profiles/76561198231636540#!/compare/1581638400/1581724800

Sold for 10 keys

Sale 8:

https://backpack.tf/profiles/76561198231636540#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198141187659#!/compare/1581638400/1581897600

Sold for ~10 keys

sale 9:

https://backpack.tf/profiles/76561198020673987#!/compare/1582416000/1582761600

https://backpack.tf/profiles/76561198850274253#!/compare/1582588800/1582675200

QS

Sale 10:

https://backpack.tf/profiles/76561198850274253#!/compare/1582675200/1582761600

https://backpack.tf/profiles/76561198197701630#!/compare/1582502400/1583020800

Sold for 8 keys, maybe more(?)

Sale 11:

https://backpack.tf/profiles/76561198986177898#!/compare/1581724800/1581811200

https://backpack.tf/profiles/76561198117654508#!/compare/1579824000/1581811200

Sold for 15 keys

Sale 12:

https://backpack.tf/profiles/76561198087761315#!/compare/1583971200/1586131200

https://backpack.tf/profiles/76561198236517016#!/compare/1565136000/1585958400

Untrace

Sale 13:

https://backpack.tf/profiles/76561198141187659#!/compare/1582675200/1582761600

https://backpack.tf/profiles/76561198140334427#!/compare/1582502400/1582761600

Sold for 14 keys

Sale 14 - 18:

https://marketplace.tf/items/tf2/980;5;u61

$22 / $1.80 = 12.22 keys

$22 / $1.78 = 12.36 keys

$27 / $1.77 = 15.25 keys <---- https://backpack.tf/item/2313231858

$23.99 / $1.78 = 13.48 keys <--- https://backpack.tf/item/7956240265

$24.99 / $1.70 = 14.70 keys

Total sales @:

10, 10, 12, 12, 13, 14, 15, 15, 15 keys

Buyers up to ~9.5 keys,

16 unsold for a month,

15 unsold for almost 2 weeks,

new seller for ~14 keys,

calling 10 low,

taking 12 - 15 keys.