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Groudon-EX (XY Black Star Promos XY42) — is it worth grading?

Is Groudon-EX worth grading?

Pokémon · XY Black Star Promos · XY42 · full price guide →

Worth grading — even a PSA 9 beats raw

A PSA 9 Groudon-EX sells for $111 against $15.18 raw: a $95.78 spread, 7.3× the ungraded price. Even a PSA 9 ($111) 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)
$15.18
PSA 9
$111
PSA 9
$111
Gem premium
7.3×
As of
Aug 10, 2026

Break-even by outcome and fee

Groudon-EX: 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 9$111+$70.78+$45.78−$54.22
PSA 9$111+$70.78+$45.78−$54.22
PSA 8$71.57+$31.39+$6.39−$93.61

Net = sale price − $15.18 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?

Groudon-EX: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$111+$45.78
50%$111+$45.78
75%$111+$45.78

At the standard fee this submission does not break even at any realistic gem rate unless the miss lands above the 9 price.

Groudon-EX graded prices by company and grade
GradePSACGC
9$111$35.00
8.5$35.00
8$71.57
7.5$33.88
7$49.95$19.28
6$15.00
5$10.50
4$16.50

Run your own numbers

Should I pay this?

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

Other XY Black Star Promos cards worth checking

Full set checklist

Grading Groudon-EX — FAQ

Is Groudon-EX worth grading?

A PSA 9 Groudon-EX sells for $111 against $15.18 raw: a $95.78 spread, 7.3× the ungraded price. Even a PSA 9 ($111) 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.

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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