Mega Evolution grading: compare each numbered printing
Mega Latias ex #181 and the different Mega Lucario and Mega Gardevoir printings have distinct grade distributions. A gem rate refers to the gem-grade share; it does not combine PSA 9 and PSA 10 outcomes. Keep those outcomes separate in the model.
What to verify for this topic
For Bulbasaur #133, verify whether the copy carries the relevant stamp before comparing prices. A stamped record cannot establish the value of an ordinary copy. Choose a submission from its condition, exact sold evidence and total cost rather than a forecast about the next set release.
Dated reference examples
Captured September 5, 2026. These are database reference prices, not independently verified recent sold comparables or buy recommendations. Each linked record identifies its set and source.
Mega Latias ex #181 — Pokemon Mega Evolution
Mega Lucario Ex #179 — Pokemon Mega Evolution
Mega Gardevoir ex #178 — Pokemon Mega Evolution
Mega Lucario Ex #188 — Pokemon Mega Evolution
| Card | Raw | PSA 10 | Gem rate | Expected net profit | PSA 10 net profit | PSA 10 ROI |
|---|---|---|---|---|---|---|
| Mega Latias ex #181 | $83.49 | $211.78 | 67.0% | $35.98 | $75.76 | 69.8% |
| Mega Lucario Ex #179 | $179.52 | $389.34 | 66.0% | $76.54 | $134.21 | 65.6% |
| Mega Gardevoir ex #178 | $184.75 | $373.97 | 66.0% | $54.99 | $115.60 | 55.1% |
| Mega Lucario Ex #188 | $255.15 | $715.00 | 33.0% | $52.05 | $341.90 | 122.0% |
Read the model correctly
The comparison uses a $25 PSA Value Bulk model fee and a 13% selling fee. Verify current service eligibility, declared-value limits and possible upcharges before submitting. The table excludes shipping, tax, insurance, supplies and time costs.
Expected net profit weights resale outcomes across the recorded grade distribution, applies the selling fee, and deducts raw and grading costs once. PSA 10 net profit assumes the card receives PSA 10. PSA 10 ROI divides that conditional profit by raw plus grading cost. It is not expected ROI.
Historical population shares are assumptions for this calculation, not personal grading probabilities. Missing grade-price references may use the engine's raw-price fallback; unmodeled outcomes and sparse records can materially change the result. Inspect the current card detail and replace reference inputs with your actual costs and verified sold evidence.
Incomplete outcome pricing in this snapshot: Mega Latias ex #181; Mega Lucario Ex #179; Mega Gardevoir ex #178; Mega Lucario Ex #188. Treat their expected results as provisional.
Build a repeatable decision
Open a card record, check the exact variant and source, adjust the purchase assumptions, and save the analysis to your account. Revisit it before buying or submitting. The methodology explains the model; Pro describes the available research features. A saved analysis records a decision assumption, not a realized return.
Correction — September 5, 2026: Removed the description of these records as vintage, incorrect mixing of PSA 9 and PSA 10 rates, and unsupported timing and predictable-return claims. The URL is preserved so earlier links lead to the correction. The current table replaces the historical figures with a dated, explicitly labeled model snapshot.