Item History: https://backpack.tf/item/11951970399

both sales were on Mannco.store

https://mannco.store/item/60547

Sale 1

Sold to buyorders for 321 $

keys were 1.70 $ (https://imgur.com/a/SgQFGuY)

321 / 1.70 = 188.82 keys ~ 189 keys

Buyorders were 200 keys on backpack.tf at the time:

https://gladiator.tf/time-machine?item=Scorching+Flames+Flamboyant+Flamenco&at=2022-07-14T20%3A24%3A00.000Z

excluding

Sale 2

Sold for 599.99 $

keys price : 1.71 $ (https://imgur.com/a/JwCT1iP)

599.99 / 1.71 = 350.87 keys ~ 351 ~ 350

Conclusion:

2 sales

~ 189 keys [due buyorders were higher (still higher) not using]

~ 350 keys

Going with 350 keys flat.