Vintage
Brock's Onix
Gym Heroes · #21 · English · released 2000
Raw market price
$17.21
7 days
▲ 0.5%
30 days
▲ 4.6%
90 days
▲ 26.9%
Graded prices & PSA population
| Grade | Market price | PSA population |
|---|---|---|
| PSA 10 | $546.00 | 53 |
| PSA 9 | $90.00 | 141 |
| PSA 8 | $35.00 | 80 |
PSA population recorded 2026-10-21 · total graded 307
Why this card matters
pop
Graded premiums are real (PSA 10 is ~43x raw) but 79 listings and tiny comp samples (n=1–2) reflect low trading velocity rather than genuine scarcity.
demand
Brock is a recognized Gym Heroes character but Onix is a secondary, non-iconic Pokémon with limited collector pull beyond set completionists.
artist
Standard Gym Heroes holo illustration with no notable alt-art distinction or artist cult following to drive premium desirability.
catalyst
30-day momentum is negative at -7.1% with no identifiable event, reprint threat, or market dislocation to reverse the trend.
Graded comps on record
$546.00
PSA 10
$90.00
PSA 9
$71.00
CGC 10
$35.00
PSA 8
$34.00
SGC 9
$29.00
CGC 9.5
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More from Gym Heroes
Market data recorded 2026-10-18 from licensed market sources. MASTER records prices daily and never invents a number — estimated values are always labeled. Not financial advice.