Resuggestion because an other sale happened. Credits to John and Shuffle Spy, Licc and BlueJay

https://backpack.tf/profiles/76561198350308765#!/compare/1611014400/1611187200

old priced bonk boy ya

sold out for Clean Scorching Flames Vive La France (240) + 310keys pure = 550keys

from Shuffle:

Vive Sales:

https://backpack.tf/profiles/76561198112281935#!/compare/1610064000/1610150400 - 125 Keys

https://backpack.tf/profiles/76561198093031738#!/compare/1612396800/1612483200 - Anti-Freeze Front Runner (123 Keys)

https://backpack.tf/profiles/76561198114402400#!/compare/1612310400/1612396800 - Stormy Storm Pyromancer's Mask (141 Keys)

https://cdn.discordapp.com/attachments/517427956444823574/816020060568420452/IMG_20210301_195208.jpg - Proof of the Pyromancer's

https://backpack.tf/profiles/76561198045343680#!/compare/1612310400/1612396800 - 150 Keys

https://backpack.tf/profiles/76561198055622215#!/compare/1612396800/1612483200 - Burning Outta' Sight + MW Hot Leopard Paint + 5 Keys

https://backpack.tf/profiles/76561198042251117#!/compare/1612828800/1612915200 - Smoking VVF + Flies Crone's (36.5 Keys)

https://cdn.discordapp.com/attachments/395577896632320000/816024378952908831/trades.png - Here's a colorful diagram of the trades

The Paint has no sales, so that sale can't be used. The VVF sale is too high.

Pyromancer's Sales:

https://backpack.tf/profiles/76561198151755104#!/compare/1606435200/1606521600 - 163 Keys (invalid)

https://backpack.tf/profiles/76561197964782863#!/compare/1610064000/1610150400 - Added 15 Keys for Blizzardy Pyromancer's (145 Keys)

https://backpack.tf/profiles/76561198040220388#!/compare/1612051200/1612224000 - Strange Genus Pom (137 Keys) + 3 Keys + ~1 Key of Festivizers

https://backpack.tf/profiles/76561198353033850#!/compare/1612310400/1612396800 - Morning Glory Grimm Hatte (invalid)

141 Keys works for the Pyromancer's Mask.

Strange Genus Pom Sales:

https://backpack.tf/profiles/76561198193674415#!/compare/1608249600/1608422400 - 150 Keys

https://backpack.tf/profiles/76561198353033850#!/compare/1611792000/1611878400 - Scorching Modest (123.5 Keys)

124 - 150 Keys works for the Pom, which averages to 137 Keys

Scorching Modest Sales:

https://backpack.tf/profiles/76561198076545687#!/compare/1607126400/1607385600 - Fits in the range

https://backpack.tf/profiles/76561198045343680#!/compare/1607817600/1607904000 - Low

https://backpack.tf/profiles/76561198045343680#!/compare/1611792000/1611878400 - Low

https://backpack.tf/profiles/76561198045343680#!/compare/1611878400/1612051200 - Better for the Peak

https://backpack.tf/profiles/76561198279433079#!/compare/1609977600/1610150400 - 109 Keys (low)

https://backpack.tf/profiles/76561198279433079#!/compare/1613001600/1613088000 - 115 Keys (low)

https://backpack.tf/profiles/76561198088707185#!/compare/1613779200/1613952000 - 130 Keys

https://backpack.tf/profiles/76561198139171368#!/compare/1612310400/1612396800 - Bulk

https://backpack.tf/profiles/76561198007696852#!/compare/1612656000/1612742400 - 117 Keys

https://backpack.tf/profiles/76561198275735463#!/compare/1613174400/1613347200 - 130 Keys

https://mannco.store/item/9716 + https://backpack.tf/item/9206720998 - $130 (low)

117 - 130 Keys works for the Modest, which averages to 123.5 Keys

141 to 150 Keys will work for the Vive, making this Bonk Boy 455.5 Keys, which can be rounded to 450 Keys.

New sale at 600 keys (credit to BlueJay): https://cdn.discordapp.com/attachments/719330854265946134/822762087893827584/unknown.png

https://backpack.tf/item/339062149

Going with 450-600