https://marketplace.tf/items/tf2/30743;5;u10

$334 = 176 keys

Unknown item history and buyout

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https://backpack.tf/profiles/76561198105087064#!/compare/1586649600/1586908800

https://backpack.tf/profiles/76561198054198170#!/compare/1586736000/1586908800

Better used on the Puzzle Duck Hatypus

Had 145 key buyout https://bot.tf/stats/listings/4OVZ3K0J

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https://backpack.tf/profiles/76561198058349418#!/compare/1583107200/1583193600

https://backpack.tf/profiles/76561198054198170#!/compare/1583107200/1583193600

Used on the Ghastly Ghosts Jr Vive https://backpack.tf/suggestion/5ec5a2096884366b5c59ff81

Had 140 key buyout https://bot.tf/stats/listings/4KVJ8ERE

//

https://backpack.tf/profiles/76561198105087064#!/compare/1586908800/1586995200

https://backpack.tf/profiles/76561198217385159#!/compare/1586908800/1586995200

Added Frozen Icefall Bumble Beenie + 5 keys for Sunbeams Hong Kong Cone, better used on the HKC

Had a 145 key buyout https://bot.tf/stats/listings/4KVJDR1N

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https://backpack.tf/profiles/76561198217385159#!/compare/1588032000/1588118400

https://backpack.tf/profiles/76561198413561667#!/compare/1587945600/1588118400

Confusing, but

https://backpack.tf/item/4763482170

https://backpack.tf/item/214125157

Searing Pyromancer's traded for Sunbeams Rotation in the 2nd compare link

(explains pyromancer's leaving)

Then the Sunbeams Rotation + 22 keys traded for the Purple Energy Patriot Peak

(explains 2nd compare link receiving only the Peak and the history on the Rotation in the 1st compare link)

So for this suggestion, all we care about is:

Sunbeams Rotation - 95 keys https://backpack.tf/suggestion/5ebc71213131c367ec3425e0

22 keys = 22 keys https://marketplace.tf/items/tf2/5021;6

Sale = 117 keys

Buyout was 125 keys https://bot.tf/stats/listings/YD1ODRLX

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https://backpack.tf/profiles/76561198413561667#!/compare/1588377600/1588636800

https://backpack.tf/profiles/76561198075670723#!/compare/1588550400/1588723200

Burning Flames Liquidator's Lid - 65 keys https://backpack.tf/suggestion/5eb8135a1817c96d6302a381

Max Head - 18 keys

Miami Nights Samur-Eye - Buyers at 10 https://gyazo.com/ea33b3e81ed2802219b793007c26b65a

Miami Nights Outdoorsman - Buyers at 7 https://gyazo.com/3c35b54401aef256664e39471511f311

Strange Blizzardy Storm Federal Casemaker - 48 keys https://backpack.tf/suggestion/5ec5a539ace2670cbb75d202

Caps at 145 key buyout https://bot.tf/stats/listings/4J9199E7

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https://backpack.tf/profiles/76561198986498652#!/compare/1585353600/1585440000

https://backpack.tf/profiles/76561198018653729#!/compare/1585353600/1585440000

Blizzardy Storm Exquisite Rack, in-date at 115 keys

https://backpack.tf/suggestion/5e6ebae89ad62a39e2423e3e

140 key buyout https://bot.tf/stats/listings/MNRR96R5

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https://backpack.tf/profiles/76561198018653729#!/compare/1588636800/1589068800

https://backpack.tf/profiles/76561198099141522#!/compare/1588982400/1589068800

40 keys = 40 keys https://marketplace.tf/items/tf2/5021;6

Snowfallen Missing Piece - 37 keys https://backpack.tf/suggestion/5e9ed555a71dd16f2f224cc8

Holy Grail Fubar - Pretty much 5 keys https://gyazo.com/94bbbb45d08e95c1a51250571a444db6

Blizzardy Team Captain - 51 key buyers

145 key buyout https://bot.tf/stats/listings/M19WWK1Q

Goes up to 133 keys with buyers on the Team Captain, this should cap at the buyout

Blizz TC

https://backpack.tf/profiles/76561197994697258#!/compare/1587340800/1587427200

https://backpack.tf/profiles/76561198099141522#!/compare/1587340800/1587427200

Aces High TC - 29 key buyers - https://gyazo.com/8bb1ff810f107ac672a2f45ca393ac5c

Kill-a-Watt Stately Steel Toe - 6.5 keys https://backpack.tf/suggestion/5e8c9d970b67f060cc65e990

18 keys = 18 keys https://marketplace.tf/items/tf2/5021;6

https://backpack.tf/profiles/76561198099141522#!/compare/1587427200/1587513600

https://backpack.tf/profiles/76561198200841613#!/compare/1587427200/1587513600

Ancient Eldritch Dino Pullover - Quicksold for 52 keys same day https://backpack.tf/item/4349146735

Strange Cute Suit (2 keys)

https://backpack.tf/profiles/76561198362008411#!/compare/1584230400/1584316800

https://backpack.tf/profiles/76561198986177898#!/compare/1584230400/1584316800

63 keys from the 109 key stack (near ID first compare link 8584618421)

okay im not making the greatest point here but i actually cant find much more blizz tc sales :/

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https://backpack.tf/profiles/76561198321556119#!/compare/1589068800/1589155200

https://backpack.tf/profiles/76561198008994962#!/compare/1588982400/1589068800

Menacing Miasma Patriot Peak, using there as this is the only sale on it

150 key buyout https://bot.tf/stats/listings/4WXVO8LX

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https://backpack.tf/profiles/76561198086548576#!/compare/1589500800/1589587200

https://backpack.tf/profiles/76561198086548576#!/compare/1589500800/1589587200

Alongside Sunbeams Sergeant's Drill Hat + 21 keys for Snowfallen Smissmas Saxton, better used there

Had a 150 key buyout https://bot.tf/stats/listings/4J92PR27

//

Sellers:

https://gyazo.com/d4b41bb3f946f9ca0ad2a131094014c9

150, 165, 200

Sales:

115

117

133/145

145

176

The Miasma Peak sale had a 150 key buyout

The Puzzle Duck sale had a 145 key buyout

The Ghastly Vive sale had a 140 key buyout

The Sunbeams HKC sale had a 145 key buyout

The Snowfallen Saxton sale had a 150 key buyout

All these lower buyouts are enough to exclude 176 as a high outlier.

Going with 115-145 keys.