Resuggestion that I hope gets through without problems. Thanks to TF2Scourge for the help!!

Marketplace sales:https://marketplace.tf/items/31003;5;u118/Vicious%20Circle%20Vampire%20Vanquisher

2018

oct 30, $1.75/key, $90 ~51.5 keys

dec 11: $1.65/key, $36.05 ~22 keys

dec 14, $1.64/key, $69.93 ~43 keys

dec 18, $1.64/key. $36 ~22 keys

2019

feb 1, $1.81/key, $36 ~20 keys

feb 6, $1.81/key, $38 ~21 keys

feb 14, $1.8/key, $38.89 ~22 keys

sold w/ haunted ghosts team captain (167.5) for Brain Drain Defragmenting Hard Hat 17%

https://backpack.tf/profiles/76561198052793694#!/compare/1546128000/1546214400

bULK, NOT USING.

https://backpack.tf/profiles/76561198350879574#!/compare/1548633600/1548720000

https://backpack.tf/profiles/76561198219934313#!/compare/1548028800/1548633600

Untrace

https://backpack.tf/profiles/76561198038751161#!/compare/1548633600/1550102400

https://backpack.tf/profiles/76561198350879574#!/compare/1548633600/1548720000

Sold for a Memory Leak Glengarry Bonnet (20)

Out of date and no recent sales, not using.

https://backpack.tf/profiles/76561198089416743#!/compare/1550016000/1550534400

https://backpack.tf/profiles/76561198038751161#!/compare/1550102400/1550448000

Sold for an Orbiting Planet's Vampire Vanquisher (14 keys, indate) + 5 pure

19 keys

https://backpack.tf/profiles/76561198312583107#!/compare/1547164800/1547251200

https://backpack.tf/profiles/76561198302384193#!/compare/1546992000/1547424000

Sold for 19 keys

Classifieds from a few days ago:

From the time of typing this up: https://gyazo.com/e3959b9c07e9fca7504c21aa7ca74028

Sellers at 20, one has been there for 2 weeks

Buyers at 12

From a few days ago, credit to TF2Scourge: https://imgur.com/a/vvrskUO

Unsold at 21 for nearly a month

Buyers starting at ~12.5

Sales

19, 19. 20, 22, 22, 43, 51.5

Since this hat was unsold at 21 for nearly a month, this rules out all sales starting at 22 as they're most likely outliers.

That leaves 19, 19, 20

Taking 19-20 keys