System Alpha v1.0PocketVault
// yugioh
Thestalos the Firestorm Monarch
Quarter Century Bonanza · #EN143
Quarter Century Secret RareEffect MonsterFIREPyro
// market value
src: YGOPRODeck
as of 2026-06-15
Raw
$0.65
PSA 9
$2.28
est.
PSA 10
$5.93
est.
Graded tiers marked est. are calculated from raw market price using rarity-based multipliers until a verified sold-comp is available.