Should You Grade Shaymin-EX #77 from Roaring Skies?
Free PSA grading EV calculator pre-loaded with live market data for Shaymin-EX #77. Current PSA 10 gem rate is 17.2% based on 349 graded copies. PSA 10 sales average $465.63 vs a raw market of $8.72. Expected value of grading: $21.00 (27% ROI). Verdict: Decent — proceed with caution.
Roaring Skies · #77 · Rare Holo EX
Default-tier verdict
Decent — proceed with caution+$21 (+27% ROI)
Based on raw market $8.72, PSA 10 $465.63, gem rate 17.2% (349 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Shaymin-EX #77 to PSA for grading. EV factors in real PSA population data (gem rates), live market prices for raw and graded copies, and PSA's tiered fee structure including upcharges when a card's graded value exceeds the tier's Max Insured Value. Adjust the inputs to match your card's exact condition for a personalized recommendation.
PSA population summary
| Grade | Population | Rate |
|---|---|---|
| PSA 10 | 60 | 17.2% |
| PSA 9 | 161 | 46.1% |
| PSA 8 | 69 | 19.8% |
| PSA 7 | 28 | 8.0% |
