https://marketplace.tf/items/tf2/30030;5;u61

$13.99 / $1.69 = 8.28 keys - rounding to 8.5

$24.99 / $1.88 = 13.29 keys - rounding to 13

//

https://backpack.tf/profiles/76561198850274253#!/compare/1584748800/1584835200

https://backpack.tf/profiles/76561198183382346#!/compare/1584748800/1585440000

Untraceable

//

https://backpack.tf/profiles/76561198183382346#!/compare/1585440000/1587081600

https://backpack.tf/profiles/76561199006515878#!/compare/1586390400/1587081600

7 keys + .5 keys of sweets

//

https://backpack.tf/profiles/76561199006515878#!/compare/1587081600/1587168000

https://backpack.tf/profiles/76561198330231701#!/compare/1586995200/1587081600

Untraceable

//

https://backpack.tf/profiles/76561198047941585#!/compare/1587081600/1587168000

https://backpack.tf/profiles/76561198330231701#!/compare/1587081600/1587168000

Bulk for Isotope Knife

//

https://backpack.tf/profiles/76561198047941585#!/compare/1588032000/1588118400

https://backpack.tf/profiles/76561198135388328#!/compare/1587945600/1588032000

Untraceable, went to scrap.tf

//

https://backpack.tf/profiles/76561198135388328#!/compare/1588118400/1588204800

https://backpack.tf/profiles/76561198015384426#!/compare/1563321600/1588204800

9 keys, sold by scrap.tf

//

https://backpack.tf/profiles/76561198015384426#!/compare/1588809600/1588896000

https://backpack.tf/profiles/76561198374206487#!/compare/1588809600/1588896000

Untraceable

//

https://backpack.tf/profiles/76561198374206487#!/compare/1588896000/1588982400

https://backpack.tf/profiles/76561198249428142#!/compare/1588896000/1588982400

Untraceable

//

https://backpack.tf/profiles/76561198249428142#!/compare/1588982400/1589068800

https://backpack.tf/profiles/76561198102881271#!/compare/1588896000/1588982400

Untraceable

//

https://backpack.tf/profiles/76561198102881271#!/compare/1589241600/1589587200

https://backpack.tf/profiles/76561198072238898#!/compare/1589068800/1589241600

Untraceable

//

https://backpack.tf/profiles/76561198841279602#!/compare/1583193600/1583280000

https://backpack.tf/profiles/76561198045844070#!/compare/1583193600/1583280000

8 keys

//

https://backpack.tf/profiles/76561198850274253#!/compare/1586736000/1586822400

https://backpack.tf/profiles/76561198446211212#!/compare/1586736000/1586822400

Untraceable

//

https://backpack.tf/profiles/76561198446211212#!/compare/1587340800/1587513600

https://backpack.tf/profiles/76561198080179568#!/compare/1587427200/1587513600

Untraceable

//

https://backpack.tf/profiles/76561198080179568#!/compare/1587513600/1587600000

https://backpack.tf/profiles/76561198859291715#!/compare/1587427200/1587686400

Untraceable, doesn't look like the Aus Frontier Justice

//

https://backpack.tf/profiles/76561198859291715#!/compare/1587945600/1588118400

https://backpack.tf/profiles/76561198850274253#!/compare/1587859200/1587945600

7 keys and 3 refined

//

https://backpack.tf/profiles/76561198850274253#!/compare/1588204800/1588291200

https://backpack.tf/profiles/76561198345696040#!/compare/1588291200/1588377600

8 keys + 30 refined, rounding to 8.5 keys

//

https://backpack.tf/profiles/76561198345696040#!/compare/1588464000/1588550400

https://backpack.tf/profiles/76561198405558674#!/compare/1588464000/1588550400

Purple Confetti Airdog (8.25) + 14 refined + Strange Cloak and Dagger (sold for 16.55 refined same day)

Rounding to 9 keys

//

https://backpack.tf/profiles/76561198405558674#!/compare/1588550400/1588809600

https://backpack.tf/profiles/76561198053787974#!/compare/1588636800/1588723200

Cloud 9 Barnstormer, better used there

//

https://backpack.tf/profiles/76561198053787974#!/compare/1588809600/1588896000

https://backpack.tf/profiles/76561198321267239#!/compare/1588896000/1588982400

Aces High Vintage Tyrolean, better used there

//

https://backpack.tf/profiles/76561198321267239#!/compare/1589155200/1590105600

https://backpack.tf/profiles/76561198997708351#!/compare/1588809600/1588896000

Untraceable

//

https://backpack.tf/profiles/76561198997708351#!/compare/1589500800/1589760000

https://backpack.tf/profiles/76561198874194908#!/compare/1588809600/1589760000

9 keys + 24 refined, rounding to 9.5 keys

//

Sales:

7

7.5

8

8.5

8.5

9

9

9.5

13

Buyers at 7.5 keys

https://gyazo.com/74c1822008636738b5f486430417cd33

13 keys is high

Going with 8-9.5 keys