Should You Grade Walrein ex #99 from Power Keepers?
Free PSA grading EV calculator pre-loaded with live market data for Walrein ex #99. Current PSA 10 gem rate is 12.9% based on 705 graded copies. PSA 10 sales average $2078.33 vs a raw market of $38.71. Expected value of grading: $148.44 (60% ROI). Verdict: Grade It.
Power Keepers · #99 · Rare Holo EX
Default-tier verdict
Grade It+$148 (+60% ROI)
Based on raw market $38.71, PSA 10 $2078.33, gem rate 12.9% (705 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Walrein ex #99 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 | 91 | 12.9% |
| PSA 9 | 240 | 34.0% |
| PSA 8 | 196 | 27.8% |
| PSA 7 | 66 | 9.4% |
