Sale 1:

https://backpack.tf/profiles/76561198156255538#!/compare/1583020800/1583193600

https://backpack.tf/profiles/76561198231711740#!/compare/1582761600/1583193600

Sold for 17 keys

sale 2:

https://backpack.tf/profiles/76561198301644953#!/compare/1585440000/1585526400

https://backpack.tf/profiles/76561198125894529#!/compare/1585440000/1585526400

Sold for ~13 keys

Sale 3:

https://backpack.tf/profiles/76561198125894529#!/compare/1586563200/1586736000

https://backpack.tf/profiles/76561198173442901#!/compare/1586649600/1586736000

Bulk

sale 4:

https://backpack.tf/profiles/76561198173442901#!/compare/1586822400/1586908800

https://backpack.tf/profiles/76561198097054949#!/compare/1586822400/1586908800

Sod for DBD Airdog + ~1.5 keys in sweets

Airdog Mini:

https://backpack.tf/suggestion/5ea270ed62d6692b49445932

Suggestion for 13.5 keys

Total is 15 keys

Sale 5:

https://backpack.tf/profiles/76561198097054949#!/compare/1586822400/1586908800

https://backpack.tf/profiles/76561198170049215#!/compare/1585872000/1587081600

Untrace

sale 6:

https://backpack.tf/profiles/76561198327633561#!/compare/1584316800/1584403200

https://backpack.tf/profiles/76561198337734785#!/compare/1584230400/1584316800

QS

Sale 7:

https://backpack.tf/profiles/76561198337734785#!/compare/1584662400/1584748800

https://backpack.tf/profiles/76561198305494036#!/compare/1584748800/1584835200

QS

sale 8:

https://backpack.tf/profiles/76561198305494036#!/compare/1585008000/1585094400

https://backpack.tf/profiles/76561197962856659#!/compare/1584576000/1585785600

Untrace

sale 9:

https://backpack.tf/profiles/76561198273021739#!/compare/1581465600/1584921600

https://backpack.tf/profiles/76561198122387677#!/compare/1582502400/1583971200

Untrace

Sale 10:

https://backpack.tf/profiles/76561198122387677#!/compare/1584057600/1584144000

https://backpack.tf/profiles/76561198850178158#!/compare/1584144000/1584230400

Cant race ~4 keys

sale 11:

https://marketplace.tf/items/tf2/921;5;u58

$34 / $1.76 = 19.32 keys

$44.32 / $1.78 = 24.90 keys

$40 / $1.68 = 23.81 keys

$29.99 / $1.68 = 17.85 keys

$22.11 / $1.75 = 12.63 keys

Total sales @:

13, 13, 15, 17, 18, 19, 24, 25 keys

buyers up to 13 keys,

unsold for months at 20 keys,

18 day old seller, poorly bumped, at 17,

poorly bumped seller at 16 keys,

https://i.imgur.com/RJczi6m.jpg

https://i.imgur.com/0BHTYTc.jpg

calling 13 low,

24 high,

taking 15 - 19 keys, conserves around aging unsold.