https://backpack.tf/profiles/76561199084282838#!/compare/1632700800/1634947200

https://backpack.tf/profiles/76561198188093413#!/compare/1632614400/1632700800

Untraceable

https://backpack.tf/profiles/76561198104430342#!/compare/1632009600/1632096000

https://backpack.tf/profiles/76561198144719522#!/compare/1631923200/1632096000

20 keys

https://backpack.tf/profiles/76561198144719522#!/compare/1632096000/1632268800

https://backpack.tf/profiles/76561198200420351#!/compare/1632009600/1632096000

14 keys and refined

https://backpack.tf/profiles/76561198200420351#!/compare/1632182400/1632268800

https://backpack.tf/profiles/76561198112785205#!/compare/1629590400/1632268800

Only 2 keys matches

https://marketplace.tf/items/tf2/31200;5;u56

$39.99 / $1.87 = 21.39 keys https://backpack.tf/item/10736784385

$39.99 / $1.87 = 21.39 keys https://backpack.tf/item/10702904146

https://backpack.tf/profiles/76561198850121720#!/compare/1634256000/1634342400

https://backpack.tf/profiles/76561198064658655#!/compare/1634256000/1634342400

https://gyazo.com/a6f952cbb22a57f5c12af7cd27469073

~17 keys

https://backpack.tf/profiles/76561198216805635#!/compare/1633478400/1633737600

https://backpack.tf/profiles/76561198182213262#!/compare/1633651200/1633824000

Untraceable

https://backpack.tf/profiles/76561198182213262#!/compare/1634256000/1634428800

https://backpack.tf/profiles/76561198862451687#!/compare/1634256000/1634428800

Only ~5.5 keys matches

https://backpack.tf/profiles/76561198862451687#!/compare/1634601600/1634774400

https://backpack.tf/profiles/76561198080593488#!/compare/1634774400/1634860800

~16 keys

https://backpack.tf/profiles/76561198080593488#!/compare/1634860800/1634947200

https://backpack.tf/profiles/76561199047755765#!/compare/1634860800/1634947200

Untraceable

https://backpack.tf/profiles/76561199047755765#!/compare/1634860800/1634947200

https://backpack.tf/profiles/76561198334367671#!/compare/1634860800/1634947200

~15.5 keys leaving 2nd compare

https://backpack.tf/profiles/76561198334367671#!/compare/1634947200/1635033600

https://backpack.tf/profiles/76561198316754406#!/compare/1634947200/1635033600

Added 10 keys for Miami Towering Pillar, the Pillar was later sold to a bot for ~27 keys https://gladiator.tf/listings/6174f7dc216b4623306f95c1

So we could call this 17 keys

https://backpack.tf/profiles/76561198316754406#!/compare/1635033600/1635120000

https://backpack.tf/profiles/76561198064658655#!/compare/1635033600/1635120000

https://gyazo.com/3e1a7d8551c4afbcd1c2691dc2195056

~18.5 keys

Sales:

14

16

16

17

17

19

20

21

21

https://gyazo.com/c8af583ae204932816df6f7f6f729dcd

me buying for 15

seller at 20 keys for 1 month

14 looks low at everything else, but it's pretty close regardless

2 sales at 21 are both marketplace, and the item sells for pure enough

going with 16-20 keys, 16-21 also fine