Suggestion: Scorching Flames Pyromancer's Mask at 200–230 keys

Sale 9) Sold for a Darkblaze Napper's + 70+ Keys of Taunts + Pro KS Aussie Flame (~30 Keys) + FN Isotope Cardboard Shotgun + ~23 Keys of Items + 16 Keys

https://backpack.tf/profiles/76561198070474543#!/compare/1528070400/1528156800

High outlier.

https://backpack.tf/item/258678961

Sale 10) Sold for 205 Keys

https://backpack.tf/profiles/76561198041822925#!/compare/1526515200/1526601600

https://backpack.tf/profiles/76561198083529516#!/compare/1526515200/1526601600

https://backpack.tf/item/669659603 - Duped

Sale 11) ?

https://backpack.tf/profiles/76561198001616972#!/compare/1529452800/1529539200

https://backpack.tf/profiles/76561198061440669#!/compare/1529452800/1529539200

Sale 12) Sold for a Duped Circling Heart Villain's Veil (210 Keys) + Disco Beat Down Brigade Helm (34.5 Keys) + 10 Keys

https://backpack.tf/profiles/76561198061440669#!/compare/1531094400/1531180800

High outlier.

Veil Mini

https://backpack.tf/profiles/76561198021272428#!/compare/1529452800/1529539200 - Sold for 220 Keys

https://backpack.tf/profiles/76561198418740133#!/compare/1528675200/1528761600 - Sold + ~1 Key of Items for a Scorching Caribbean (200 Keys)

https://backpack.tf/profiles/76561198418740133#!/compare/1529798400/1529884800 - Bulk

https://backpack.tf/profiles/76561198175420885#!/compare/1530230400/1530403200 - Sold + GBH Panama for a Duped PE Veil (has no Mini)

https://marketplace.tf/items/393;5;u19;strange - Sold for $400 when Keys were $1.96 each (400 / 1.96 = 204 Keys)

Conqueror Micro

https://backpack.tf/suggestion/5b35de2244325a40da2ef5e3 - With the Tartan at 78, that sale is ~165 Keys

https://backpack.tf/profiles/76561197987574214#!/compare/1529712000/1530230400 - The Tartan is ~78 Keys

Taking 165 - 235 Keys.

Brigade Mini

https://backpack.tf/suggestion/5b6b5ee4cf6c754d65115e3e

http://www.tf2outpost.com/trade/29689037#latest - The sale at 40 was capped by the Buyout of 38 Keys.

Taking 31 - 38

https://backpack.tf/item/211955567

Sale 13) Sold for a Sunbeams Pyromancer's Mask + 35 Keys

https://backpack.tf/profiles/76561198174203179#!/compare/1528502400/1528588800

This was used to update that Mask.

Sale 14) Sold + 100 Keys + Darkblaze Barnstormer for a Spellbound Wraith Wrap

https://backpack.tf/profiles/76561198088542924#!/compare/1528848000/1528934400

https://backpack.tf/profiles/76561198036445124#!/compare/1528848000/1528934400

This would be better for the Wrap.

Sale 15) Sold for a Misty Skull El Jefe (130 Keys) + Poisoned Shadows Big Country (80 Keys)

https://backpack.tf/profiles/76561198036445124#!/compare/1528848000/1528934400

https://backpack.tf/profiles/76561198112331037#!/compare/1528848000/1528934400

130 + 80 = 210 Keys

Country Mini

https://backpack.tf/suggestion/5b71ec44cf6c7563a8659238 - 80 Keys

https://backpack.tf/item/4162381911

Sale 16) Sold + Demonflame Brigade Helm for a Scorching Flames Killer's Kabuto

https://backpack.tf/profiles/76561197976524938#!/compare/1527120000/1527206400

Low outlier.

Sale 17) Sold for a Scorching Flames Spook Specs + 10 Keys

https://backpack.tf/profiles/76561198151087213#!/compare/1527206400/1527292800

This updated the Specs.

Sale 18) Sold for 200 Keys

https://backpack.tf/profiles/76561197986959390#!/compare/1527465600/1527638400

Sales at 200 and 205 pure look both like quicksells. Both sold within 2 days according to their histories. https://backpack.tf/item/4162381911 https://backpack.tf/item/258678961

So with sales at 200 and 205 being quicksells I'd go with 210 to 230 as range

Sales here are 165, (your purchase which seems to be ~170 but not sure cuz histories are a tad weird) 200, 200, 205, 210, 210, 215, 230. The common trading point is definitely well-reflected here.

More sales:

https://backpack.tf/profiles/76561198203177648#!/compare/1535328000/1535414400 - Sold + ~55 Keys of Mixed for a Chiroptera Charmer's (300 Keys)

https://backpack.tf/profiles/76561198081706519#!/compare/1535328000/1535414400 - Sold + Subatomic Hot Air for a Sunbeams Bonk Boy (~215 Keys)

Bonk Mini

https://backpack.tf/profiles/76561198215898179#!/compare/1531353600/1531440000 - Sold for a Burning Charmer's

http://www.tf2outpost.com/trade/29708679 - Had a Buyout of 230 Keys

https://backpack.tf/profiles/76561198287940798#!/compare/1533859200/1534204800 - Sold for a Nebula Translator + 10 Keys

The Bonk should be around 200 - 230 Keys, roughly.

The Charmer's sale is high because of a 26 Day Unsold at 200 Keys (it was hidden for a bit, came back up) -> https://imgur.com/a/ibMFs4U

https://backpack.tf/item/233839146

The Bonk sale also supports the low end.

Just bought duped one for 220 in offers,Clean Green Black hole Flamenco ~110 and Clean DBD Pyromancer's Mask ~110

https://i.gyazo.com/2612dfbcaef948e1484fd375096a9a17.gif

https://backpack.tf/profiles/76561198254285639#!/compare/1535068800/1535328000

Should support that 200 and 205 should not be included. Not sure why ShuffleSpy has not reacted to my comment above. Quicksells are never included in the range

New sale. Duped but probably over 250 (didn't mini) https://backpack.tf/profiles/76561198073744178#!/compare/1535587200/1535673600