Sale 1:

https://backpack.tf/profiles/76561197965378333#!/compare/1580428800/1584316800

https://backpack.tf/profiles/76561198802991149#!/compare/1584144000/1584230400

Untrace

sale 2:

https://backpack.tf/profiles/76561198802991149#!/compare/1584489600/1584576000

https://backpack.tf/profiles/76561198108946685#!/compare/1584489600/1584576000

Sold for ~9 keys

sale 3:

https://backpack.tf/profiles/76561198108946685#!/compare/1584489600/1584576000

https://backpack.tf/profiles/76561198167383619#!/compare/1584489600/1584576000

sold for 7 keys(?)

Sale 4:

https://backpack.tf/profiles/76561198167383619#!/compare/1584489600/1584576000

https://backpack.tf/profiles/76561198162963055#!/compare/1584489600/1584576000

Sold with 3 keys for Flies Coldfront

use there

Sale 5:

https://backpack.tf/profiles/76561198162963055#!/compare/1584576000/1584662400

https://backpack.tf/profiles/76561198108797381#!/compare/1584489600/1584576000

sold in bulk for keys

Sale 6:

https://backpack.tf/profiles/76561198108797381#!/compare/1584576000/1584662400

https://backpack.tf/profiles/76561198126246920#!/compare/1586044800/1586217600

Untrace

sale 7:

https://backpack.tf/profiles/76561198126246920#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198363395191#!/compare/1586217600/1586304000

QS

sale 8:

https://backpack.tf/profiles/76561198363395191#!/compare/1586304000/1586390400

https://backpack.tf/profiles/76561198080996895#!/compare/1583020800/1586390400

Untrace

sale 9:

https://backpack.tf/profiles/76561198196894698#!/compare/1585008000/1585094400

https://backpack.tf/profiles/76561198850274253#!/compare/1585008000/1585094400

Sold for ~9 keys (QS)

Sale 10:

https://backpack.tf/profiles/76561198850274253#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198126246920#!/compare/1586217600/1586304000

Sold with ~0.49 keys in sweets for 12 keys

sale 11:

https://backpack.tf/profiles/76561198257210962#!/compare/1583971200/1584057600

https://backpack.tf/profiles/76561198059248968#!/compare/1583971200/1584057600

Sold for DBD Hive Minder + 1 key

hive Minder mini:

https://backpack.tf/suggestion/5ea70ab71b58745bfb5e6722

Suggestion for 12.5 keys

Total is 13.5 keys

https://bot.tf/stats/listings/Y80RJW8D

B/O of 14 keys

Sale 12:

https://backpack.tf/profiles/76561198059248968#!/compare/1584057600/1584230400

https://backpack.tf/profiles/76561198396959351#!/compare/1584144000/1584230400

Sold with ~1 key in sweets for Miami Vampire

use there

sale 13:

https://backpack.tf/profiles/76561198396959351#!/compare/1584403200/1584489600

https://backpack.tf/profiles/76561198133319499#!/compare/1584403200/1584489600

Sold for ~11 keys

sale 14:

https://backpack.tf/profiles/76561198133319499#!/compare/1584403200/1584489600

https://backpack.tf/profiles/76561198324774613#!/compare/1584403200/1584489600

Sold for ~10 keys

Sale 15:

https://marketplace.tf/items/tf2/600;5;u56

$23.95 / $1.77 = 13.53 keys

$13 / $1.72 = 7.56 keys

$19.99 / $1.69 = 11.83 keys

$19.44 / $1.69 = 11.50 keys

Total sales @:

7.5, 9, 9, 10, 11, 12, 12, 12, 14, 14 keys

buyers up to ~9.5 keys,

seller at 16 keys,

calling 9 low,

calling 14 high to balance,

taking 10 - 12 keys.