Should You Grade Blastoise #137 from Plasma Storm?
Free PSA grading EV calculator pre-loaded with live market data for Blastoise #137. Current PSA 10 gem rate is 3.2% based on 1,441 graded copies. PSA 10 sales average $12300.00 vs a raw market of $410.32. Expected value of grading: $236.67 (23% ROI). Verdict: Decent — proceed with caution.
Plasma Storm · #137 · Rare Secret
Default-tier verdict
Decent — proceed with caution+$237 (+23% ROI)
Based on raw market $410.32, PSA 10 $12300.00, gem rate 3.2% (1,441 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Blastoise #137 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 | 46 | 3.2% |
| PSA 9 | 405 | 28.1% |
| PSA 8 | 449 | 31.2% |
| PSA 7 | 271 | 18.8% |
