Midpoint - Card Centering Tool
マスターボール (拡張シート2) — is it worth grading?

Is マスターボール worth grading?

Pokémon · 拡張シート2 · full price guide →

Grading rarely pays for this card

PSA 10 copies of マスターボール sell for $212, only $0.00 above the $1,000 raw price — less than an economy-tier grading fee. A PSA 9 ($55.08) sells for less than raw, so anything short of a 10 loses money. Keep it raw unless you are grading for the slab itself.

Raw (NM)
$1,000
PSA 10
$212
PSA 9
$55.08
Gem premium
0.2×
As of
Aug 10, 2026

Break-even by outcome and fee

マスターボール: net result of grading versus selling raw, by outcome and fee tier
If it comes back…Sells forEconomy / bulk (~$25.00)Standard (~$50.00)Express (~$150)
Gem — PSA 10$212−$813−$838−$938
PSA 9$55.08−$970−$995−$1,095
PSA 8$24.00−$1,001−$1,026−$1,126

Net = sale price − $1,000 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?

マスターボール: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$94.25−$956
50%$133−$917
75%$173−$877

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
マスターボール: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
PSA 10$212best55/4575/25

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.

マスターボール graded prices by company and grade
GradePSA
10$212
9$55.08
8$24.00

Run your own numbers

Should I pay this?

Enter the seller’s asking price to see your net outcome per grade.

Other 拡張シート2 cards worth checking

Full set checklist

Grading マスターボール — FAQ

Is マスターボール worth grading?

PSA 10 copies of マスターボール sell for $212, only $0.00 above the $1,000 raw price — less than an economy-tier grading fee. A PSA 9 ($55.08) sells for less than raw, so anything short of a 10 loses money. Keep it raw unless you are grading for the slab itself.

How much is a PSA 10 マスターボール worth compared with raw?

A PSA 10 マスターボール (拡張シート2) sells for about $212 versus $1,000 for a raw near-mint copy — a 0.2× premium as of Aug 10, 2026.

What centering does マスターボール 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.

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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