https://marketplace.tf/items/tf2/633;5;u15

$33.99 / $2.12 = 16.03 keys

https://backpack.tf/profiles/76561198049800876#!/compare/1606089600/1606176000

https://backpack.tf/profiles/76561199101961909#!/compare/1606003200/1606089600

Bulk

https://backpack.tf/profiles/76561199101961909#!/compare/1607040000/1607212800

https://backpack.tf/profiles/76561198850121720#!/compare/1606953600/1607040000

17 keys + refined to round up to 18

https://backpack.tf/profiles/76561198850121720#!/compare/1609372800/1609545600

https://backpack.tf/profiles/76561198133594386#!/compare/1609545600/1609891200

Bulk

https://backpack.tf/profiles/76561199084784906#!/compare/1608854400/1608940800

https://backpack.tf/profiles/76561198354234410#!/compare/1606521600/1609891200

Untraceable

https://backpack.tf/profiles/76561198311498888#!/compare/1606521600/1606608000

https://backpack.tf/profiles/76561199087739806#!/compare/1606089600/1606780800

Untraceable, sold by stn.tf

Looks like they were selling for 22 or 24

https://gyazo.com/66203b4c2cdaabdb95c175ccd4c41162 https://gyazo.com/e3ae4911782ac5c485193a55c79f6358

https://backpack.tf/profiles/76561199087739806#!/compare/1606780800/1607299200

https://backpack.tf/profiles/76561198850274253#!/compare/1606780800/1607299200

Then it ended up with a bot again anyway

https://backpack.tf/profiles/76561198850274253#!/compare/1609459200/1609545600

https://backpack.tf/profiles/76561198376090319#!/compare/1609459200/1609545600

18 keys sold by quicksell.store

https://backpack.tf/profiles/76561198376090319#!/compare/1610064000/1610150400

https://backpack.tf/profiles/76561198011241239#!/compare/1577491200/1610150400

12 keys,

Bubbling Titanium Tyrolean - 9 key buyers

Acidic Bubbles of Envy Taunt: Yeti Punch - 6 key buyers

27 keys in buyers alone high outlier compared to everything else

sales

16

18

18

27

https://gyazo.com/2e9e8bcb421a00668298108531dbb468

Buyers are actually 16, let's go with only 18