Should You Grade Armored Mewtwo #SM228 from SM Black Star Promos?
Free PSA grading EV calculator pre-loaded with live market data for Armored Mewtwo #SM228. Current PSA 10 gem rate is 5.1% based on 5,865 graded copies. PSA 10 sales average $13050.00 vs a raw market of $155.82. Expected value of grading: $268.97 (34% ROI). Verdict: Decent — proceed with caution.
SM Black Star Promos · #SM228 · Promo
Default-tier verdict
Decent — proceed with caution+$269 (+34% ROI)
Based on raw market $155.82, PSA 10 $13050.00, gem rate 5.1% (5,865 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Armored Mewtwo #SM228 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 | 298 | 5.1% |
| PSA 9 | 1,793 | 30.6% |
| PSA 8 | 1,637 | 27.9% |
| PSA 7 | 928 | 15.8% |
