Should You Grade Brock #15 from Gym Heroes?
Free PSA grading EV calculator pre-loaded with live market data for Brock #15. Current PSA 10 gem rate is 1.8% based on 1,382 graded copies. PSA 10 sales average $584.43 vs a raw market of $29.00. Expected value of grading: $-25.11 (-25% ROI). Verdict: Sell raw.
Gym Heroes · #15 · Rare Holo
Default-tier verdict
Sell raw$-25 (-25% ROI)
Based on raw market $29.00, PSA 10 $584.43, gem rate 1.8% (1,382 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Brock #15 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 | 25 | 1.8% |
| PSA 9 | 266 | 19.2% |
| PSA 8 | 449 | 32.5% |
| PSA 7 | 312 | 22.6% |
