Brock's Onix
Gym Heroes · #21 · Rare
$12.56US · TCGplayer
$8.45EU · Cardmarket
+3%7-day (EU)
+10%30-day (EU)
Market read: flat this week; notably pricier in the US.
#48 most valuable of 132 cards in Gym Heroes.
TCGplayer range: low $8.66 · market $12.56 · high $4,321 (1stEdition)
Prices datamined 2026-06-12. The 7/30-day trend is Cardmarket (EU) — an early momentum signal, not a guarantee.