Re-suggesting, using sales from the last suggestion onwards.

Sale 1:

Sold for Logo Chapeau (Suggestion at 46) + Peace Sign Polar Bear (13.5) + ~9 keys in items

No outpost

Seller: https://backpack.tf/profiles/76561198086793593#!/compare/1530921600/1531008000

Buyer: https://backpack.tf/profiles/76561198273802196#!/compare/1530921600/1531008000

https://backpack.tf/item/5104664557

X = 69

Sale 2:

Sold for Scorching Flames Head Hedge (Suggestion at 53)

No outpost

Seller: https://backpack.tf/profiles/76561198106139655#!/compare/1530748800/1530835200

Buyer: https://backpack.tf/profiles/76561198086793593#!/compare/1530748800/1530835200

https://backpack.tf/item/5104664557

X = 53

Sale 3:

Sold for $102.84 on marketplace.tf

https://marketplace.tf/items/30175;5;u15

https://backpack.tf/item/6905027731

http://www.tf2outpost.com/trade/29699866 - B/O of 84

http://manicbot.me/keyprice/?at=2018-07-16 - 102.84/1.96 = ~52.47

X = 52

Sale 4:

Sold for 45 keys

Seller: https://backpack.tf/profiles/76561198171781862#!/compare/1536796800/1537056000

Buyer: https://backpack.tf/profiles/76561198174084635#!/compare/1536969600/1537056000

https://backpack.tf/item/6508595475 (probably gambled away shortly after)

X = 45

Sale 5:

Sold with 15 keys for Scorching Defiant Spartan

Seller: https://backpack.tf/profiles/76561198057858014#!/compare/1527811200/1527897600

Buyer: https://backpack.tf/profiles/76561198200513134#!/compare/1527724800/1527897600

https://backpack.tf/item/5104664557

Better off being used on the Spartan.

Sale 6:

Sold for Miami Modest + Atomic UT (18.5) + 5 keys

http://www.tf2outpost.com/trade/29653002 - B/O of 70

Seller: https://backpack.tf/profiles/76561198079082551#!/compare/1527811200/1527897600

Buyer: https://backpack.tf/profiles/76561197960393800#!/compare/1527811200/1534723200

https://backpack.tf/item/5548967048

Gonna be pretty high. Excluding.

Sale 7:

Sold for Duped Scorching Brain Bucket

No outpost

Seller: https://backpack.tf/profiles/76561198200513134#!/compare/1528761600/1528934400

Buyer: https://backpack.tf/profiles/76561198188670954#!/compare/1528848000/1528934400

https://backpack.tf/item/5104664557

No mini available on the brain bucket, though I feel that it’ll end up being high anyways.

Sale 8:

Bulk for Cloudy Moon L’Homme Burglerre

Seller: https://backpack.tf/profiles/76561198188670954#!/compare/1529107200/1529193600

Buyer: https://backpack.tf/profiles/76561198093438754#!/compare/1529107200/1529193600

https://backpack.tf/item/5104664557

Sale 9:

Sold for Phosphorus Flipped Trilby + Smoking Boxcar Bomber

No outpost

Seller: https://backpack.tf/profiles/76561198093438754#!/compare/1529107200/1529193600

Buyer: https://backpack.tf/profiles/76561198106139655#!/compare/1529107200/1529193600

https://backpack.tf/item/5104664557

Gonna be pretty high without a B/O cap, excluding.

Scorching Head Hedge:

https://backpack.tf/suggestion/5b9def38cf6c7505bd44e7cb

Sellers:

https://i.imgur.com/gjPeoRd.png

https://backpack.tf/item/2396849603 - 54 keys

https://backpack.tf/item/7142477784 - 85 keys

https://backpack.tf/item/3656842979 - 90 keys

https://i.imgur.com/ovWuQPf.png - ~52 keys

https://backpack.tf/item/6905027731 - approaching 2 months

Sales at:

45

52

53

69

Seller at 54 is 3 months unsold, and the scrap.tf seller is approaching 2 months unsold. Anything higher should be safe to exclude. Most of the sales higher than these sellers occurred before the seller was listed, most likely.

Going with 45-53.

the one on scrap sold, should fit in the range.

https://backpack.tf/profiles/76561198135388328#!/compare/1537315200/1537401600

https://backpack.tf/profiles/76561198297837925#!/compare/1537401600/1537833600

then another one sold to scrap for 45 keys. supports low-end.

https://backpack.tf/profiles/76561198838239573#!/compare/1537574400/1537660800

https://backpack.tf/profiles/76561198135388328#!/compare/1537574400/1538006400