Should You Grade Mewtwo #10 from Base?
Free PSA grading EV calculator pre-loaded with live market data for Mewtwo #10. Current PSA 10 gem rate is 2.1% based on 28,660 graded copies. PSA 10 sales average $5215.50 vs a raw market of $28.64. Expected value of grading: $-372.10 (-58% ROI). Verdict: Sell raw.
Base · #10 · Rare Holo
Default-tier verdict
Sell raw$-372 (-58% ROI)
Based on raw market $28.64, PSA 10 $5215.50, gem rate 2.1% (28,660 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Mewtwo #10 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 | 595 | 2.1% |
| PSA 9 | 4,822 | 16.8% |
| PSA 8 | 6,618 | 23.1% |
| PSA 7 | 5,159 | 18.0% |
