Credits to Xergoyf:

$19.99 / $1.87 = 10.69 keys

https://marketplace.tf/items/tf2/358;5;u58

New mp sale @ 10.69, rounds to 10.5

The 10 buy order was only up for ~1 month before being removed. Even if they are still actively buying at 10 it doesn't counter lower sales. This can be 8 - 10.5 with the new sale.

https://backpack.tf/profiles/76561198016593811#!/compare/1632182400/1632268800

Thanks to Renim! Sale for 10 keys http://totally-not.a-sketchy.site/768sVJk.png

https://backpack.tf/profiles/76561198161389997#!/compare/1626739200/1626825600

https://backpack.tf/profiles/76561198099685235#!/compare/1626739200/1626912000

doesn't seem traceable

https://backpack.tf/profiles/76561198250618872#!/compare/1628380800/1629504000

added for smoking ponytail? better use there

https://backpack.tf/profiles/76561199129094746#!/compare/1629504000/1629590400

https://backpack.tf/profiles/76561198198440035#!/compare/1629504000/1629590400

really don't know

https://backpack.tf/profiles/76561198198440035#!/compare/1629504000/1629590400

https://backpack.tf/profiles/76561198259033965#!/compare/1629504000/1629590400

can't tell

https://backpack.tf/profiles/76561198993873071#!/compare/1629590400/1629676800

trade site

https://backpack.tf/profiles/76561198948862192#!/compare/1630454400/1631577600

untrace + is trade site

https://backpack.tf/profiles/76561199024067184#!/compare/1631836800/1631923200

trade site

https://backpack.tf/profiles/76561198202672367#!/compare/1631836800/1631923200

this is 9 keys tho on buyer's side

https://backpack.tf/profiles/76561198202672367#!/compare/1631923200/1632096000

10 keys

https://backpack.tf/profiles/76561198016593811#!/compare/1632182400/1632268800

kinda untraceable

https://backpack.tf/profiles/76561199031062705#!/compare/1627084800/1627776000

https://backpack.tf/item/7955379182 - this miami bomb was prob sold for the ~8keys used to buy the knot (de villa matches on bomb and keys)

https://backpack.tf/profiles/76561198377165880#!/compare/1627689600/1627776000

taking 8k here

https://backpack.tf/profiles/76561199031062705#!/compare/1627862400/1630368000

untraceable

Sales:

8, 9, 10, 10, 10.5

surprisingly this ends up being an exact refresh