https://marketplace.tf/items/tf2/180;5;u61

$39.99 / $1.99 = 20.10 keys

$39.99 / $1.81 = 22.09 keys

https://backpack.tf/item/2936703661

https://backpack.tf/item/2603063508

https://backpack.tf/item/1843205831

https://mannco.store/item/440-miami-nights-unusual-frenchmans-beret

$30.99 / $1.66 = 18.67 keys

http://backpack.tf/item/2603063508

https://backpack.tf/profiles/76561198307159650#!/compare/1621036800/1621123200

https://backpack.tf/profiles/76561198083926038#!/compare/1621036800/1621123200

Distant Dream Killing Tree

https://backpack.tf/profiles/76561198083926038#!/compare/1621036800/1621123200

https://backpack.tf/profiles/76561199106217370#!/compare/1621036800/1621123200

14 keys and metal

https://backpack.tf/profiles/76561199106217370#!/compare/1626220800/1626307200

https://backpack.tf/profiles/76561198799726010#!/compare/1626220800/1626307200

https://gladiator.tf/listings/60ebebcc74510701d1880c3e

17 keys and 1 scrap

https://backpack.tf/profiles/76561198799726010#!/compare/1626307200/1626393600

https://backpack.tf/profiles/76561198844438037#!/compare/1626307200/1626393600

Untraceable

https://backpack.tf/profiles/76561198844438037#!/compare/1626307200/1626393600

https://backpack.tf/profiles/76561198174626773#!/compare/1626307200/1626393600

Added 18 keys for S. TF Logo Winter Woodsman, using there

https://backpack.tf/profiles/76561198174626773#!/compare/1626393600/1626480000

https://backpack.tf/profiles/76561198426486350#!/compare/1626307200/1626393600

15 keys + S. Law (qsed same day for ~1 key) leaving the 2nd compare, sale = 16 keys

https://backpack.tf/profiles/76561198426486350#!/compare/1626393600/1626480000

https://backpack.tf/profiles/76561198361485333#!/compare/1625875200/1626480000

17 keys, sweets that add to a key = 18 keys

https://backpack.tf/profiles/76561198841279602#!/compare/1625702400/1625788800

https://backpack.tf/profiles/76561198030630432#!/compare/1624838400/1627689600

Untraceable

https://backpack.tf/profiles/76561198025005959#!/compare/1624838400/1625097600

https://backpack.tf/profiles/76561198888086377#!/compare/1624838400/1624924800

15 keys

https://backpack.tf/profiles/76561198214942357#!/compare/1621296000/1626652800

https://backpack.tf/profiles/76561198080179568#!/compare/1621209600/1621296000

Untraceable

https://backpack.tf/profiles/76561199111073161#!/compare/1627948800/1628035200

https://backpack.tf/profiles/76561198280524116#!/compare/1627948800/1628035200

18 keys

Sales:

14

15

16

17

18

19

20

22

https://gyazo.com/4deb16eb8db05d1bfd192891ad164c55

Buyers to 16.5

With the amount of lower sales and lower buyouts, going with 17-20 keys, cutting off 22 to tighten the range