Is Rillaboom worth grading?
Pokémon · SWSH Black Star Promos · full price guide →
Worth grading only if it gems
A PSA 10 Rillaboom brings $45.04 versus $6.05 raw — a $38.99 spread that covers an economy-tier ~$25 grading fee. A PSA 9 ($6.02) sells for less than raw, so anything short of a 10 loses money.
- Raw (NM)
- $6.05
- PSA 10
- $45.04
- PSA 9
- $6.02
- Gem premium
- 7.4×
- 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 | $45.04 | +$13.99 | −$11.01 | −$111 |
| PSA 9 | $6.02 | −$25.03 | −$50.03 | −$150 |
| PSA 8 | $10.00 | −$21.05 | −$46.05 | −$146 |
Net = sale price − $6.05 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% | $15.77 | −$40.28 |
| 50% | $25.53 | −$30.52 |
| 75% | $35.29 | −$20.76 |
At the standard fee this submission does not break even at any realistic gem rate unless the miss lands above the 9 price.
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 | $45.04 | best | 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.
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Other SWSH Black Star Promos cards worth checking
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Grading Rillaboom — FAQ
Is Rillaboom worth grading?
A PSA 10 Rillaboom brings $45.04 versus $6.05 raw — a $38.99 spread that covers an economy-tier ~$25 grading fee. A PSA 9 ($6.02) sells for less than raw, so anything short of a 10 loses money.
How much is a PSA 10 Rillaboom worth compared with raw?
A PSA 10 Rillaboom (SWSH Black Star Promos) sells for about $45.04 versus $6.05 for a raw near-mint copy — a 7.4× premium as of Aug 10, 2026.
What centering does Rillaboom 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.
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