Should You Grade Brock's Golem #20 from Gym Heroes?
Free PSA grading EV calculator pre-loaded with live market data for Brock's Golem #20. Current PSA 10 gem rate is 20.5% based on 127 graded copies. PSA 10 sales average $375.00 vs a raw market of $13.76. Expected value of grading: $13.40 (16% ROI). Verdict: Sell raw.
Gym Heroes · #20 · Rare
Default-tier verdict
Sell raw+$13 (+16% ROI)
Based on raw market $13.76, PSA 10 $375.00, gem rate 20.5% (127 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Brock's Golem #20 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 | 26 | 20.5% |
| PSA 9 | 45 | 35.4% |
| PSA 8 | 30 | 23.6% |
| PSA 7 | 15 | 11.8% |
