Should You Grade Nidoking #150 from Aquapolis?
Free PSA grading EV calculator pre-loaded with live market data for Nidoking #150. Current PSA 10 gem rate is 5.2% based on 2,143 graded copies. PSA 10 sales average $23697.84 vs a raw market of $846.68. Expected value of grading: $2211.06 (150% ROI). Verdict: Grade It.
Aquapolis · #150 · Rare Secret
Default-tier verdict
Grade It+$2211 (+150% ROI)
Based on raw market $846.68, PSA 10 $23697.84, gem rate 5.2% (2,143 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Nidoking #150 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 | 112 | 5.2% |
| PSA 9 | 465 | 21.7% |
| PSA 8 | 416 | 19.4% |
| PSA 7 | 303 | 14.1% |
