Should You Grade Blastoise-EX #21 from Evolutions?
Free PSA grading EV calculator pre-loaded with live market data for Blastoise-EX #21. Current PSA 10 gem rate is 33.0% based on 5,245 graded copies. PSA 10 sales average $149.02 vs a raw market of $7.00. Expected value of grading: $-9.88 (-13% ROI). Verdict: Sell raw.
Evolutions · #21 · Rare Holo EX
Default-tier verdict
Sell raw$-10 (-13% ROI)
Based on raw market $7.00, PSA 10 $149.02, gem rate 33.0% (5,245 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Blastoise-EX #21 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 | 1,729 | 33.0% |
| PSA 9 | 2,334 | 44.5% |
| PSA 8 | 710 | 13.5% |
| PSA 7 | 167 | 3.2% |
