Should You Grade Slowpoke #108 from Aquapolis?
Free PSA grading EV calculator pre-loaded with live market data for Slowpoke #108. Current PSA 10 gem rate is 37.7% based on 138 graded copies. PSA 10 sales average $869.88 vs a raw market of $26.00. Expected value of grading: $314.32 (327% ROI). Verdict: Grade It.
Aquapolis · #108 · Common
Default-tier verdict
Grade It+$314 (+327% ROI)
Based on raw market $26.00, PSA 10 $869.88, gem rate 37.7% (138 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Slowpoke #108 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 | 52 | 37.7% |
| PSA 9 | 65 | 47.1% |
| PSA 8 | 16 | 11.6% |
| PSA 7 | 2 | 1.4% |
