Should You Grade Nidoking #31 from Legendary Collection?
Free PSA grading EV calculator pre-loaded with live market data for Nidoking #31. Current PSA 10 gem rate is 31.6% based on 136 graded copies. PSA 10 sales average $81.47 vs a raw market of $9.58. Expected value of grading: $-24.84 (-31% ROI). Verdict: Sell raw.
Legendary Collection · #31 · Rare
Default-tier verdict
Sell raw$-25 (-31% ROI)
Based on raw market $9.58, PSA 10 $81.47, gem rate 31.6% (136 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Nidoking #31 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 | 43 | 31.6% |
| PSA 9 | 52 | 38.2% |
| PSA 8 | 24 | 17.6% |
| PSA 7 | 10 | 7.4% |
