Sale 1:

https://backpack.tf/profiles/76561198000485231#!/compare/1584835200/1585008000

https://backpack.tf/profiles/76561198135015291#!/compare/1584835200/1585008000

Sold for C9 Elite + 1 key

Elite mini:

https://backpack.tf/suggestion/5ebca56ddb81f70161050319

Suggestion for 7.75 keys

Total is 8.75 keys

sale 2:

https://backpack.tf/profiles/76561198135015291#!/compare/1584835200/1585008000

https://backpack.tf/profiles/76561198217385159#!/compare/1584921600/1585008000

Sold with ~4 keys in sweets for DBD Dead Cone

Cone mini:

https://backpack.tf/suggestion/5ebcaeba332222706e47e29a

Suggestion for 10.5 keys

Total is 6.5 keys

Sale 3:

https://backpack.tf/profiles/76561198217385159#!/compare/1584921600/1585008000

https://backpack.tf/profiles/76561198350879574#!/compare/1584921600/1585008000

Sold for ~6.5 keys

sale 4:

https://backpack.tf/profiles/76561198350879574#!/compare/1585008000/1585094400

https://backpack.tf/profiles/76561198365375459#!/compare/1585008000/1585094400

Sold for 7 keys

sale 5:

https://backpack.tf/profiles/76561198365375459#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198278987281#!/compare/1585094400/1585180800

Untrace

sale 6:

https://backpack.tf/profiles/76561199015360978#!/compare/1585180800/1585267200

https://backpack.tf/profiles/76561198874693079#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198847267051#!/compare/1585094400/1585180800

Untrace

Sale 7:

https://backpack.tf/profiles/76561198847267051#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198197962410#!/compare/1585094400/1585180800

sold for keys

sale 8:

https://backpack.tf/profiles/76561198197962410#!/compare/1585699200/1585785600

https://backpack.tf/profiles/76561198154700747#!/compare/1585699200/1585785600

Untrace

sale 9:

https://backpack.tf/profiles/76561197977205006#!/compare/1584921600/1585094400

https://backpack.tf/profiles/76561198446300079#!/compare/1584921600/1585094400

Sold for spell

sale 10:

https://backpack.tf/profiles/76561198446300079#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198187448465#!/compare/1585094400/1585180800

Sold for keys

sale 11:

https://backpack.tf/profiles/76561198187448465#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198197962410#!/compare/1585094400/1585180800

Can trace a fish

Sale 12:

https://backpack.tf/profiles/76561198197962410#!/compare/1585180800/1585267200

https://backpack.tf/profiles/76561198348357238#!/compare/1585440000/1585526400

Untrace

sale 13:

https://backpack.tf/profiles/76561198269395083#!/compare/1582070400/1582156800

https://backpack.tf/profiles/76561198337734785#!/compare/1582070400/1582156800

QS

Sale 14:

https://backpack.tf/profiles/76561198141553219#!/compare/1588377600/1588636800

https://backpack.tf/profiles/76561198017901187#!/compare/1577059200/1588723200

Bulk

sale 15:

https://backpack.tf/profiles/76561198337734785#!/compare/1582675200/1582761600

https://backpack.tf/profiles/76561198951002649#!/compare/1582675200/1582761600

https://backpack.tf/profiles/76561198337734785#!/compare/1582675200/1582761600

tradeback

sale 16:

https://backpack.tf/profiles/76561198337734785#!/compare/1585785600/1585872000

https://backpack.tf/profiles/76561198152999099#!/compare/1585094400/1585958400

Keys

sale 17:

https://backpack.tf/profiles/76561198152999099#!/compare/1585958400/1586995200

https://backpack.tf/profiles/76561198331508691#!/compare/1586908800/1586995200

Sold with 2 keys for Planets Reggae

use there

sale 18:

https://backpack.tf/profiles/76561198331508691#!/compare/1586908800/1586995200

https://backpack.tf/profiles/76561198850274253#!/compare/1586908800/1586995200

QS for 6 keys

sale 19:

https://marketplace.tf/items/tf2/437;5;u29

$17 / $1.82 = 9.34 keys <--- https://backpack.tf/item/1284530554

Total sales @:

6, 6.5, 6.5, 7, 8.75, 9.5 keys

buyers up to ~6.4 keys,

one high buyer at 7 keys,

2 month unsold at 9 keys,

taking 6.5 - 9 keys.