Should You Grade Psyduck #20 from Wizards Black Star Promos?
Free PSA grading EV calculator pre-loaded with live market data for Psyduck #20. Current PSA 10 gem rate is 34.8% based on 3,749 graded copies. PSA 10 sales average $1111.59 vs a raw market of $72.08. Expected value of grading: $367.65 (227% ROI). Verdict: Grade It.
Wizards Black Star Promos · #20 · Promo
Default-tier verdict
Grade It+$368 (+227% ROI)
Based on raw market $72.08, PSA 10 $1111.59, gem rate 34.8% (3,749 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Psyduck #20 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 | 1,306 | 34.8% |
| PSA 9 | 1,796 | 47.9% |
| PSA 8 | 434 | 11.6% |
| PSA 7 | 96 | 2.6% |
