Brock's Onix #21 PSA 10 Price
$121.50
PSA 10 price history
Every grade, priced
| Grade | Market value | PSA population |
|---|---|---|
| PSA 10 (Gem Mint) | $121.50 | 22 |
| Grade 9.5 | $24.00 | — |
| PSA 9 (Mint) | $22.17 | 44 |
| Grade 8 | $11.27 | 33 |
| Grade 7 | $9.00 | 12 |
| BGS 10 | $158.00 | — |
| CGC 10 | $12.50 | — |
| Raw (ungraded) | $8.74 | — |
PSA has graded 119 copies of Brock's Onix #21 in total — 18.5% came back Gem Mint. Full cross-company population lives on the card page.
Thinking of grading your copy?
The math is on the card page: live grading expected value from this card's real gem rate and PSA prices, minus fees. And before you submit anything, the grading guide covers the self-checks that separate 10 candidates from expensive 9s.
Brock's Onix PSA 10 FAQ
How much is Brock's Onix worth in PSA 10?
Brock's Onix #21 from Gym Heroes is currently worth $121.50 in PSA 10 Gem Mint, based on graded sales data updated weekly. A raw copy trades around $8.74 — the PSA 10 carries a 13.9x premium.
How many PSA 10 copies of Brock's Onix exist?
PSA has graded 119 copies, and 22 earned the Gem Mint 10 label — a 18.5% gem rate. Population grows over time as new copies are submitted.
Is Brock's Onix worth grading?
Run the math, not the hope: grading costs roughly $20-25 per card, so a submission pays when the PSA 10 price times your realistic gem chance beats the raw price plus fees. This card gems at about 18.5%. The live grading expected value is computed on the main card page.
PSA 10 vs PSA 9 — how big is the difference for Brock's Onix?
A PSA 10 is worth $121.50 against $22.17 for a PSA 9 — a 5.5x gap. That gap is why centering and surface checks before submitting matter more than anything else.