Grading ROI · estimate · Double Crisis
Is Team Magma's Groudon-EX worth grading?
On the estimate, a PSA 10 Team Magma's Groudon-EX is worth about €1,397.06 vs. €399.16 raw — an estimated net gain of +€218.42 after €80.95 all-in cost (Mid era (2004–2018), ~30% assumed PSA-10 rate).
How this estimate works
Every figure here is an estimate from a disclosed model, not a sale price. Estimated graded value = the card's raw Cardmarket trend price × a published, era-based grade-uplift rule of thumb — it is NOT an eBay/auction comp, and Foilio does not use any marketplace sold-listing data. Grading fees are real 2026 PSA figures (in USD, shown converted to EUR at a fixed rate); EU sellers also pay shipping and import VAT on top. Outcomes vary card to card. Informational only — not financial advice. Confirm condition and live prices before submitting anything.
Raw prices: Cardmarket via pokemontcg.io (trend price, EUR). Population & cert (where shown): official PSA Public API. Foilio is not affiliated with PSA or Cardmarket. Model v1.1.0, reviewed 2026-06-17.
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Estimates for planning only — not financial advice. Foilio is an unofficial fan project, not affiliated with PSA, Cardmarket or The Pokémon Company.