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Cornerstone Mask Ogerpon Ex #91

Cornerstone Mask Ogerpon Ex #91

Pokemon Japanese Terastal Festival · #091 · Base · Dec 2024

Buy Raw on eBayPSA 10 Sold on eBay
Shop on TCGPlayer

No — Not Worth Grading

Should You Grade?

Raw Price
$1.25
Expected Value
$-6.52
Net Profit
$-6.25
Gem Rate
74.0%
ROI
-38%
Sales / Yr
57

Even a PSA 10 would lose $6.25 after the $15.00 grading cost and selling fees. The graded value doesn't justify the investment.

Best Tier for Flipping

TAG Basic$22.00/card · 30+ business days
Net Profit $42.50
Per-Flip ROI 127%
Annualized 2,340%
Unlock with Pro →

Factors in grading cost, turnaround time, and compounding — how fast you can reinvest profits into the next flip.

Profitability by Grading Company

CompanyBest TierGem RatePop10sCostEVNet ProfitROI
PSAPSA Standard52.3%8,4201,250$20.00$85.40$32.50127%
BGSBGS Standard52.3%8,4201,250$20.00$85.40$32.50127%
CGCCGC Standard52.3%8,4201,250$20.00$85.40$32.50127%
SGCSGC Standard52.3%8,4201,250$20.00$85.40$32.50127%
TAGTAG Standard52.3%8,4201,250$20.00$85.40$32.50127%
Compare All Companies with Pro →

Shows the best-value tier from each grading company based on EV, cost, and turnaround. Pop = total graded population; 10s = grade 10 count.

Price by Grade

Raw
$1.25
BGS 10
$25.00
PSA 10
$19.38
SGC 10
$12.00
BGS 9.5
$11.00
9
$10.81
CGC 10
$10.00
View Sold PSA 10 Prices on PriceCharting →View Grading Data on GemRate →
0%100%
74.0%Gem Rate (PSA 10)
Past month gem rate: 0.0%
⚠ Small sample size — gem rates based on only 38 graded cards may be unreliable.

Grade Distribution (38 total graded)

38Total
PSA 102873.7%
PSA 9821.1%
PSA 825.3%
© 2026 Should You Grade? Data from PriceCharting & GemRate.
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