Should You Grade M Blastoise-EX #18 from Generations?
Free PSA grading EV calculator pre-loaded with live market data for M Blastoise-EX #18. Current PSA 10 gem rate is 12.6% based on 1,021 graded copies. PSA 10 sales average $885.24 vs a raw market of $22.71. Expected value of grading: $78.30 (84% ROI). Verdict: Grade It.
Generations · #18 · Rare Holo EX
Default-tier verdict
Grade It+$78 (+84% ROI)
Based on raw market $22.71, PSA 10 $885.24, gem rate 12.6% (1,021 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting M Blastoise-EX #18 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 | 129 | 12.6% |
| PSA 9 | 357 | 35.0% |
| PSA 8 | 289 | 28.3% |
| PSA 7 | 139 | 13.6% |
