https://marketplace.tf/items/tf2/31025;5;u19

$40 / $1.69 = 23.67 keys

$20.72 / $1.69 = 12.26 keys - low

$40 / $1.69 = 23.67 keys

$35 / $1.75 = 20.00 keys

$44.44 / $1.85 = 24.02 keys

https://backpack.tf/item/7561379862

https://backpack.tf/item/7464240626

//

https://backpack.tf/profiles/76561198813099430#!/compare/1582243200/1583107200

https://backpack.tf/profiles/76561198305494036#!/compare/1583020800/1583107200

13 keys to Killua

//

https://backpack.tf/profiles/76561198305494036#!/compare/1583020800/1583107200

https://backpack.tf/profiles/76561198077870175#!/compare/1583020800/1583107200

Untraceable, sold same day as it was bought in the above sale

//

https://backpack.tf/profiles/76561198077870175#!/compare/1583107200/1583193600

https://backpack.tf/profiles/76561198307370048#!/compare/1583107200/1583193600

6 keys + less than a key in craft hats? Likely something missing

//

https://backpack.tf/profiles/76561198307370048#!/compare/1583107200/1583193600

https://backpack.tf/profiles/76561198012144854#!/compare/1583020800/1583193600

Bulk for Searing Well-Rounded Rifleman

//

https://backpack.tf/profiles/76561198012144854#!/compare/1585785600/1585872000

https://backpack.tf/profiles/76561198012613726#!/compare/1585785600/1585872000

Looks like a quicksell

//

https://backpack.tf/profiles/76561198012613726#!/compare/1585872000/1585958400

https://backpack.tf/profiles/76561198102412373#!/compare/1586217600/1586476800

Untraceable

//

https://backpack.tf/profiles/76561198148511293#!/compare/1585612800/1585699200

https://backpack.tf/profiles/76561198191779491#!/compare/1585526400/1585699200

19 keys

//

https://backpack.tf/profiles/76561198254882979#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198040280241#!/compare/1586217600/1586304000

Bulk

//

https://backpack.tf/profiles/76561198040280241#!/compare/1585872000/1585958400

https://backpack.tf/profiles/76561198191779491#!/compare/1585872000/1585958400

Bulk

//

https://backpack.tf/profiles/76561198254882979#!/compare/1586304000/1586390400

https://backpack.tf/profiles/76561198996047364#!/compare/1586304000/1586390400

Untraceable

//

https://backpack.tf/profiles/76561198996047364#!/compare/1586390400/1586476800

https://backpack.tf/profiles/76561198244962432#!/compare/1586390400/1586476800

16 keys

//

https://backpack.tf/profiles/76561198244962432#!/compare/1586563200/1586649600

https://backpack.tf/profiles/76561198415907231#!/compare/1586304000/1586563200

DBD Marauder + 6 keys

Marauder is 13.5 keys https://backpack.tf/suggestion/5e97c258bea44050ff42c3c2

Rounding for 20 keys

//

https://backpack.tf/profiles/76561198122704935#!/compare/1585267200/1588204800

https://backpack.tf/profiles/76561199009042461#!/compare/1587340800/1588982400

Untraceable

//

Sales:

6 13 16 19 20 20 24 24 24

https://gyazo.com/aa90974cde6bff7eef9b593ad37c29ac

Buyers at 16

Unsold at 22 for 7 months

Going with 19-20