Should You Grade Sabrina's Psyduck #99 from Gym Challenge?
Free PSA grading EV calculator pre-loaded with live market data for Sabrina's Psyduck #99. Current PSA 10 gem rate is 22.4% based on 147 graded copies. PSA 10 sales average $357.45 vs a raw market of $7.45. Expected value of grading: $21.33 (28% ROI). Verdict: Decent — proceed with caution.
Gym Challenge · #99 · Common
Default-tier verdict
Decent — proceed with caution+$21 (+28% ROI)
Based on raw market $7.45, PSA 10 $357.45, gem rate 22.4% (147 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Sabrina's Psyduck #99 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 | 33 | 22.4% |
| PSA 9 | 50 | 34.0% |
| PSA 8 | 30 | 20.4% |
| PSA 7 | 19 | 12.9% |
