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Mamoswine (Stormfront 21/100) — is it worth grading?

Is Mamoswine worth grading?

Pokémon · Stormfront · 21/100 · full price guide →

Worth grading — even a PSA 9 beats raw

A CGC 9 Mamoswine sells for $47.35 against $1.89 raw: a $45.46 spread, 25× the ungraded price. Even a PSA 9 ($30.00) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.

Raw (NM)
$1.89
CGC 9
$47.35
PSA 9
$30.00
Gem premium
25×
As of
Aug 10, 2026

Break-even by outcome and fee

Mamoswine: 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 — CGC 9$47.35+$20.46−$4.54−$105
PSA 9$30.00+$3.11−$21.89−$122

Net = sale price − $1.89 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?

Mamoswine: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$34.34−$17.55
50%$38.67−$13.22
75%$43.01−$8.88

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
Mamoswine: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
CGC 10$25.07best55/4575/25

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.

Mamoswine graded prices by company and grade
GradePSACGC
10$25.07
9.5$8.26
9$30.00$47.35
8.5$9.00
8$40.00
7$19.50
5.5$10.00

Run your own numbers

Should I pay this?

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

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Full set checklist

Grading Mamoswine — FAQ

Is Mamoswine worth grading?

A CGC 9 Mamoswine sells for $47.35 against $1.89 raw: a $45.46 spread, 25× the ungraded price. Even a PSA 9 ($30.00) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.

What centering does Mamoswine need for a CGC 10?

CGC 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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