Sale 1:

https://backpack.tf/profiles/76561198255672038#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198402240423#!/compare/1581811200/1581897600

Sold for ~16 keys in sweets

sale 2:

https://backpack.tf/profiles/76561198402240423#!/compare/1581897600/1581984000

https://backpack.tf/profiles/76561198263801172#!/compare/1581897600/1581984000

https://backpack.tf/profiles/76561198402240423#!/compare/1581897600/1581984000

transfer

sale 3:

https://backpack.tf/profiles/76561198402240423#!/compare/1581897600/1581984000

https://backpack.tf/profiles/76561198325595749#!/compare/1581897600/1581984000

Bulk

sale 3:

https://backpack.tf/profiles/76561198325595749#!/compare/1582070400/1582156800

https://backpack.tf/profiles/76561198026744290#!/compare/1582070400/1582156800

Bulk

sale 4:

https://backpack.tf/profiles/76561198026744290#!/compare/1582416000/1582502400

https://backpack.tf/profiles/76561198160856661#!/compare/1582416000/1582502400

Bulk

sale 5:

https://backpack.tf/profiles/76561198160856661#!/compare/1582675200/1582761600

https://backpack.tf/profiles/76561198117149690#!/compare/1582243200/1582761600

Sold for Stormy Tartan + 8 keys

Tartan Mini:

https://backpack.tf/suggestion/5ebf750a09a92a5c903257bd

suggestion for 13 keys

Total is 21 keys

https://bot.tf/stats/listings/M0D0D8N2

B/O of 20 keys, capping

Sale 6:

https://backpack.tf/profiles/76561198996342192#!/compare/1584230400/1585440000

https://backpack.tf/profiles/76561198837143610#!/compare/1585094400/1585526400

Untrace

sale 7:

https://backpack.tf/profiles/76561198837143610#!/compare/1586044800/1586131200

https://backpack.tf/profiles/76561198089601798#!/compare/1586044800/1586131200

Sold for GE Tailor

use there

sale 8:

https://marketplace.tf/items/tf2/31072;5;u127

$30 / $1.75 = 17.14 keys

$29.99 / $1.73 = 17.34 keys <--- https://backpack.tf/item/8491479767

Total sales @:

16, 17, 17, 20 keys

Taking 16 - 20 keys.