Sales:

https://backpack.tf/item/2333169002

https://backpack.tf/profiles/76561198311498888#!/compare/1593216000/1593129600

https://backpack.tf/profiles/76561198389139109#!/compare/1589414400/1593216000

https://backpack.tf/profiles/76561198311498888#!/compare/1593216000/1593302400

Bought and sold back to the stn bot.

https://backpack.tf/profiles/76561198068053643#!/compare/1597104000/1597190400

https://backpack.tf/profiles/76561198396499936#!/compare/1597104000/1597190400

Bulk

https://backpack.tf/item/1624657913

https://backpack.tf/profiles/76561198850178158#!/compare/1594425600/1594512000

https://backpack.tf/profiles/76561198850121720#!/compare/1594512000/1597795200

transfer

https://backpack.tf/item/998959877

https://backpack.tf/profiles/76561198910694805#!/compare/1593907200/1593993600

https://backpack.tf/profiles/76561198124723591#!/compare/1593907200/1593993600

likely keys

https://backpack.tf/profiles/76561198124723591#!/compare/1594080000/1594166400

https://backpack.tf/profiles/76561198155034684#!/compare/1592956800/1594252800

https://backpack.tf/profiles/76561198337734785#!/compare/1594166400/1594252800

Untrace then QS

https://backpack.tf/item/1444535880

https://backpack.tf/profiles/76561198841279602#!/compare/1590451200/1590537600

https://backpack.tf/profiles/76561198359386714#!/compare/1590364800/1590537600

Sold for at least 5 keys

https://backpack.tf/profiles/76561198359386714#!/compare/1590537600/1590969600

https://backpack.tf/profiles/76561198305494036#!/compare/1590883200/1590969600

QS

https://backpack.tf/profiles/76561198305494036#!/compare/1591056000/1591142400

https://backpack.tf/profiles/76561198851421641#!/compare/1589932800/1591142400

Bot.tf (your 6 key sale)

https://backpack.tf/profiles/76561198851421641#!/compare/1589932800/1591142400

https://backpack.tf/profiles/76561198171275719#!/compare/1591056000/1591142400

Sold for ~6 keys

https://backpack.tf/profiles/76561198171275719#!/compare/1591056000/1591142400

https://backpack.tf/profiles/76561199029561522#!/compare/1591142400/1591228800

Sold for ~6.5 keys

https://backpack.tf/profiles/76561199029561522#!/compare/1591142400/1591228800

https://backpack.tf/profiles/76561198354130413#!/compare/1588982400/1591142400

Sold with 5 keys for Stormy Nickel(13.5)

Total is 8.5 keys

https://backpack.tf/profiles/76561197961420647#!/compare/1591056000/1591142400

https://backpack.tf/profiles/76561198354130413#!/compare/1588982400/1591142400

https://backpack.tf/profiles/76561198354130413#!/compare/1588982400/1591142400

https://backpack.tf/profiles/76561198400089523#!/compare/1590537600/1591142400

Untrace

https://backpack.tf/profiles/76561198400089523#!/compare/1591142400/1591228800

https://backpack.tf/profiles/76561198080179568#!/compare/1591056000/1591142400

QS

https://backpack.tf/profiles/76561198080179568#!/compare/1592438400/1592524800

https://backpack.tf/profiles/76561198118794852#!/compare/1592611200/1592956800

Untrace

https://backpack.tf/profiles/76561198118794852#!/compare/1593648000/1593993600

https://backpack.tf/profiles/76561198305494036#!/compare/1593907200/1593993600

QS

https://backpack.tf/profiles/76561198305494036#!/compare/1594080000/1594166400

https://backpack.tf/profiles/76561198993873071#!/compare/1594080000/1594166400

Bot.tf for ~6.5 keys

https://backpack.tf/profiles/76561198993873071#!/compare/1594166400/1594252800

https://backpack.tf/profiles/76561198841279602#!/compare/1594166400/1594252800

QS

https://marketplace.tf/items/tf2/254;5;u33

$14.99 / $1.99 = 7.53 keys

$14 / $1.99 = 7.04 keys

Total sales @:

6, 6, 6.5, 6.5, 7, 7.5, 8.5 keys

https://i.imgur.com/41acFdx.jpg

unsold for ~7 keys dropped recently, which negates the point about sellers restricting the price.

This should be ranged 6.5 - 7 keys.