Miraidon ex #28
Pokemon Promo · #028 · Jul 1999
Maybe — Proceed with Caution
Should You Grade?
Raw Price
$1.00
Expected Value
$-2.62
Net Profit
$7.84
Gem Rate
40.0%
ROI
+49%
Sales / Yr
255
Negative expected value ($-2.62) — while a PSA 10 would be profitable, the probability-weighted outcome across all grades means you lose money on average at this grading tier. PSA 10 profit of $7.84 is thin — grading fees and selling costs eat most of the margin.
Best Tier for Flipping
Factors in grading cost, turnaround time, and compounding — how fast you can reinvest profits into the next flip.
Profitability by Grading Company
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
$1.00
BGS 10
$51.00
PSA 10
$39.00
CGC 10
$23.84
BGS 9.5
$11.00
SGC 10
$10.00
9
$7.61
8
$4.25
7
$3.00
40.0%Gem Rate (PSA 10)
3 graded last month
Past month gem rate: 33.0%
Grade Distribution (179 total graded)
179Total
PSA 107139.7%
PSA 97642.5%
PSA 82514.0%
Below 773.9%