Like most Magic: The Gathering cards, the value of The Fire Crystal depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Final Fantasy)
While you can find later printings cheaper, an Alpha Sinkhole, identifiable by its very rounded corners, commands a massive premium
Sometimes we've had great applications of it, like in Modern Horizons 2 and Commander Legends, and other times it's been hard to notice, like in Strixhaven's Mystical Archive
This Umbreon with a gold star is ultra rare, and If you have one, you could get at least $400 to $500 for it, with pricing for mint and gem examples climbing over $900
There is a wayat least there could be