Is Cornerstone Mask Ogerpon ex worth grading?
Pokémon · Prismatic Evolutions · 160/131 · full price guide →
Strong grading candidate — 6.4× premium in PSA 10
A PSA 10 Cornerstone Mask Ogerpon ex sells for $87.52 against $13.60 raw: a $73.92 spread, 6.4× the ungraded price. A PSA 9 ($26.77) only about breaks even after fees, so the case rests on gemming. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
- Raw (NM)
- $13.60
- PSA 10
- $87.52
- PSA 9
- $26.77
- Gem premium
- 6.4×
- As of
- Aug 10, 2026
Break-even by outcome and fee
| If it comes back… | Sells for | Economy / bulk (~$25.00) | Standard (~$50.00) | Express (~$150) |
|---|---|---|---|---|
| Gem — PSA 10 | $87.52 | +$48.92 | +$23.92 | −$76.08 |
| PSA 9 | $26.77 | −$11.83 | −$36.83 | −$137 |
| PSA 8 | $16.97 | −$21.63 | −$46.63 | −$147 |
Net = sale price − $13.60 raw value − fee. Fee tiers are illustrative; plug your grader's current price into the calculator below.
Expected value — how often does it need to gem?
| Chance it gems | Expected sale | Expected net (standard fee) |
|---|---|---|
| 25% | $41.96 | −$21.64 |
| 50% | $57.14 | −$6.46 |
| 75% | $72.33 | +$8.73 |
Break-even gem rate at the standard fee: about 61%. Centering is the usual reason a clean copy misses — measure it before you decide.
Which grader pays the most — and what a 10 takes
All centering standards →| Grader | 10 sells for | vs best | Front centering for a 10 | Back |
|---|---|---|---|---|
| TAG 10 | $139 | best | 55/45 | 72/28 |
| PSA 10 | $87.52 | −$51.42 | 55/45 | 75/25 |
| SGC 10 | $47.00 | −$91.94 | 55/45 | 75/25 |
| CGC 10 | $23.98 | −$115 | 55/45 | 75/25 |
Tolerances are each company's published centering standard for its top grade; surface, corners and edges must also be clean. Centering is the one you can measure yourself before you pay.
Full grade ladder
Raw conditions & history →| Grade | PSA | CGC | BGS | SGC | TAG |
|---|---|---|---|---|---|
| 10 | $87.52 | $23.98 | — | $47.00 | $139 |
| 9.5 | — | $10.00 | — | — | — |
| 9 | $26.77 | $15.97 | $11.00 | — | $25.00 |
| 8 | $16.97 | — | — | — | — |
| 7 | $15.05 | — | — | — | — |
Run your own numbers
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Grading Cornerstone Mask Ogerpon ex — FAQ
Is Cornerstone Mask Ogerpon ex worth grading?
A PSA 10 Cornerstone Mask Ogerpon ex sells for $87.52 against $13.60 raw: a $73.92 spread, 6.4× the ungraded price. A PSA 9 ($26.77) only about breaks even after fees, so the case rests on gemming. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
How much is a PSA 10 Cornerstone Mask Ogerpon ex worth compared with raw?
A PSA 10 Cornerstone Mask Ogerpon ex (Prismatic Evolutions 160/131) sells for about $87.52 versus $13.60 for a raw near-mint copy — a 6.4× premium as of Aug 10, 2026.
Which grading company is best for Cornerstone Mask Ogerpon ex?
By resale value, TAG 10 leads at $139, ahead of PSA 10 at $87.52. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Cornerstone Mask Ogerpon ex need for a TAG 10?
TAG publishes 55/45 front and 72/28 back centering as the tolerance for a 10 (Gem Mint). Off-center copies are capped below the top grade regardless of surface — measure yours before paying the fee.
What gem rate makes grading Cornerstone Mask Ogerpon ex break even?
At a standard ~$50 fee, submitting Cornerstone Mask Ogerpon ex breaks even when it gems about 61% of the time (a miss assumed to sell at the PSA 9 price of $26.77).
Is your Pokémon card centered well enough to grade?
Centering makes or breaks a PSA 10. Scan any card with Midpoint to measure its exact centering, get a grade estimate, and see what your copy is actually worth.
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