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Brock's Onix
Gym Heroes · #021
$9.15latest TCGplayer median
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Price history (TCGplayer median, ~180 days)
About Brock's Onix #021's market value
Brock's Onix #021 (Unlimited, Rare) from Gym Heroes (2000) has a market price of $9.15 raw as of August 29, 2026, the TCGplayer market price for this exact printing. For context, the median Gym Heroes card is $5.38; this one ranks #103 of 264 priced printings. Over the last 30 days the price has edged up (+4.9%). Its 180-day range is $7.17 to $9.15 — it is trading near the top of that range.
Graded copies of Brock's Onix sell for more than raw. A PSA 10 has a recent sale median of $496.93, about 33× the raw price (1 recent sale) — thin data, treat as indicative. PSA 9 copies go for around $24.99, about 1.6× the raw price (1 recent sale) — thin data, treat as indicative. Other grades we track: ACE 8 at $20.49, CGC 9 at $15.00, PSA 8 at $12.50. Graded medians come from recent eBay sold listings and refresh daily.