Resuggesting after Shuffle Spy's addition. This hat sold for $1500 (820 keys after rounding) but had spent time listed for $1200 prior to it's sale, capping the sale at that number and those date's corresponding key price = 606 keys.

$1500 sale info

Sold for $1500

https://marketplace.tf/items/tf2/30644;5;u14

keys are $1.82 today https://imgur.com/a/sJHEaFU - https://marketplace.tf/items/tf2/5021;6

"Guideline - for hats 200-1000 keys, please round to the nearest 10 keys"

$1500/1.82 = 824.17, round and done.

Corrected addition from Shuffle Spy about the b/o cap application

"This was listed for $1200 in December

https://archivist.tf/history?item=Scorching+Flames+White+Russian&at=2025-12-21&range=3

700 Keys in January

https://archivist.tf/history?item=Scorching+Flames+White+Russian&at=2026-01-24&range=3

650 Keys for a little over a week in March

https://archivist.tf/history?item=Scorching+Flames+White+Russian&at=2026-03-02&range=3

Back up to $1200 (as low as 606 Keys) for 2 months

https://archivist.tf/history?item=Scorching+Flames+White+Russian&at=2026-03-10&range=3

550 Keys for a week in May

https://archivist.tf/history?item=Scorching+Flames+White+Russian&at=2026-05-14&range=3

$1200 for a day, then $1100 for 5 days

https://archivist.tf/history?item=Scorching+Flames+White+Russian&at=2026-05-21&range=3

https://archivist.tf/history?item=Scorching+Flames+White+Russian&at=2026-05-23&range=3

https://archivist.tf/history?item=Scorching+Flames+White+Russian&at=2026-06-06&range=3

Then it sold a month after being listed at $1500. $1200 is the most stable listing and was ~606 Keys, so this sale should be capped at that for long this was listed for less than $1500."

Hat spent quite a while on the market, so pricing fluctuated a lot and unfortunately the sale finally took place at a higher price that's getting beat out by the time it spent listed for the $1200 for this pricing.

Going with 606. Thanks for the help Shuffle Spy