https://marketplace.tf/items/tf2/31185;5;u15

$39.99 / $1.89 = 21.16 keys

https://backpack.tf/profiles/76561198009309781#!/compare/1625616000/1625702400

https://backpack.tf/profiles/76561198064658655#!/compare/1625616000/1625702400

i got it in bulk

https://backpack.tf/profiles/76561198064658655#!/compare/1625788800/1625875200

https://backpack.tf/profiles/76561198815641469#!/compare/1625788800/1625875200

https://gyazo.com/51a3a24d11c0ad2a547a762bd6fe0aa7

i sold it for about 23 keys in items and i quicksold all of those items to buy orders to receive about 23 keys

more:

https://backpack.tf/profiles/76561198076417722#!/compare/1628467200/1628553600

https://backpack.tf/profiles/76561199127652476#!/compare/1628467200/1628553600

~14 keys to a buy order https://gladiator.tf/sales?item=Searing%20Plasma%20Brim%20of%20Fire&at=2021-08-15T13:52:36.720Z

https://backpack.tf/profiles/76561198079990847#!/compare/1627862400/1627948800

https://backpack.tf/profiles/76561198065970693#!/compare/1621468800/1627948800

18 keys

https://backpack.tf/profiles/76561198041186431#!/compare/1625011200/1625097600

https://backpack.tf/profiles/76561198071853797#!/compare/1625011200/1625097600

Provided in this suggestion by buyer, 16 keys

https://backpack.tf/item/10326270213 Item history for MP sale

Sales now:

14 to buy order

16

18

21

23

https://gyazo.com/a0b3fdef7fc5b6758d774dce69945b6d

Buy orders not at 14 anymore

19 keys for 2 weeks

20 keys for ~5 days https://backpack.tf/item/10400849328

14-18 or 16-18? I wait for moderators