Is Thundurus-GX worth grading?
Pokémon · SM Black Star Promos · SM133 · full price guide →
Strong grading candidate — 46× premium in PSA 10
A PSA 10 Thundurus-GX sells for $158 against $3.48 raw: a $155 spread, 46× the ungraded price. A PSA 9 ($20.18) 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)
- $3.48
- PSA 10
- $158
- PSA 9
- $20.18
- Gem premium
- 46×
- 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 | $158 | +$130 | +$105 | +$4.93 |
| PSA 9 | $20.18 | −$8.30 | −$33.30 | −$133 |
| PSA 8 | $5.60 | −$22.88 | −$47.88 | −$148 |
Net = sale price − $3.48 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% | $54.74 | +$1.26 |
| 50% | $89.30 | +$35.81 |
| 75% | $124 | +$70.37 |
Break-even gem rate at the standard fee: about 24%. 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 |
|---|---|---|---|---|
| PSA 10 | $158 | best | 55/45 | 75/25 |
| CGC 10 | $12.50 | −$146 | 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 |
|---|---|---|
| 10 | $158 | $12.50 |
| 9 | $20.18 | $11.04 |
| 8 | $5.60 | — |
Run your own numbers
Should I pay this?
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Grading Thundurus-GX — FAQ
Is Thundurus-GX worth grading?
A PSA 10 Thundurus-GX sells for $158 against $3.48 raw: a $155 spread, 46× the ungraded price. A PSA 9 ($20.18) 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 Thundurus-GX worth compared with raw?
A PSA 10 Thundurus-GX (SM Black Star Promos SM133) sells for about $158 versus $3.48 for a raw near-mint copy — a 46× premium as of Aug 10, 2026.
Which grading company is best for Thundurus-GX?
By resale value, PSA 10 leads at $158, ahead of CGC 10 at $12.50. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Thundurus-GX need for a PSA 10?
PSA publishes 55/45 front and 75/25 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 Thundurus-GX break even?
At a standard ~$50 fee, submitting Thundurus-GX breaks even when it gems about 24% of the time (a miss assumed to sell at the PSA 9 price of $20.18).
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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