https://backpack.tf/item/9610333231

6 keys:

https://backpack.tf/profiles/76561198125791160#!/compare/1708819200/1708905600

https://backpack.tf/profiles/76561198417803655#!/compare/1708732800/1708992000

5 taunts (https://imgur.com/tYD9Zm4):

https://backpack.tf/profiles/76561198417803655#!/compare/1709078400/1709164800

https://backpack.tf/profiles/76561199012612624#!/compare/1709078400/1709164800

--

Shooter's Stakeout: 1.15 keys https://gladiator.tf/sales?item=Taunt:%20Shooter%27s%20Stakeout&at=2024-02-28T09:59:13.194Z

Road Rager: 1.95 keys https://gladiator.tf/sales?item=Taunt:%20The%20Road%20Rager&at=2024-02-29T10:00:32.388Z

Box Trot: 1.35 keys https://gladiator.tf/sales?item=Taunt:%20The%20Box%20Trot&at=2024-02-28T10:01:15.750Z

Pool Party: 2 keys https://gladiator.tf/sales?item=Taunt:%20Pool%20Party&at=2024-02-28T10:02:17.887Z

Mourning Mercs: 2.75 keys https://gladiator.tf/sales?item=Taunt:%20Mourning%20Mercs&at=2024-02-28T10:03:01.218Z

so 1.15+1.95+1.35+2+2.75=9,2 keys

Caps at 8 keys https://next.backpack.tf/classifieds/snapshots/Hollow%20Flourish%20Taunt:%20Scorcher's%20Solo/65df60d210a7f0a9c90498c1

https://backpack.tf/item/9541542288 withdrawn from bot then listed on Mannco.Store

https://backpack.tf/item/10045726202 withdrawn from bot

~~

https://marketplace.tf/items/tf2/31157;5;u3063

December 13: $18.89/1.734=10.89 ~11 keys

key price https://marketplace.tf/items/tf2/5021;6

(1.74+1.73+1.73+1.75+1.73+1.73+1.73)/7=1.734

~~

https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Scorcher%27s%20Solo?filter=Hollow+Flourish

Seller at $17.68 (~8.22 keys taking keys at 2.15)

10 looks like an outlier, going with 6-8 keys