![Shellder [Master Ball] #90 — Pokemon Japanese Scarlet & Violet 151](/_next/image?url=https%3A%2F%2Fstorage.googleapis.com%2Fimages.pricecharting.com%2Flmgntb7wsfwqdrra%2F1600.jpg&w=3840&q=75)
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2. Compare lower-grade outcomes3. Save your assumptionsConfirm edition, language and variant, inspect both sides, and check recent comparable sales. A model result is not a verified buy.
Pokemon Japanese Scarlet & Violet 151 · #090 · Jun 2023
Should You Grade?
Negative expected value ($-5.21) — while a PSA 10 would be profitable, the probability-weighted outcome across all grades means you lose money on average at this grading tier. Only 80 sales per year — it may take time to find a buyer at full price. PSA 10 profit of $4.97 is thin — grading fees and selling costs eat most of the margin.
Factors in grading cost, turnaround time, and compounding — how fast you can reinvest profits into the next flip.
Shows the best-value tier from each grading company based on EV, cost, and turnaround. Pop = total graded population; 10s = grade 10 count.
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Price history
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