Pokémon sets › Japanese Holon Research › Groudon [Gold-Star]
![Japanese Holon Research Groudon [Gold-Star] Pokémon card](https://pub-4919690d36064f94806d666a71d998a0.r2.dev/jpv2/japanese-holon-research/groudon-056-086.webp)
Groudon [Gold-Star] #56
Low confidence 1st most valuable of 90 priced cards in Japanese Holon Research — top 1%
Rough guide — limited market data — pre-2010 condition spread, liquid, well-sampled card, thinner Japanese market data.
Priced against the UK market and refreshed weekly — adjusted where UK collectors reliably pay above the US average. We have not yet seen enough recent UK activity for this card to read it directly.
A PSA 10 of this card sells for about 16.4× the ungraded price — £584.51 raw against £9594.00 graded.
Peaked at £589.82 in May 2026; lowest £572.71 in June 2026. PSA 10 moved +500.0% over a comparable period.
UK price month by month
| Month | UK ungraded |
|---|---|
| May 2026 | £589.82 |
| June 2026 | £583.81 |
| July 2026 | £585.13 |
| August 2026 | £584.51 |
UK guide prices, with the US market alongside — updated 29 August 2026. Each market is priced from real market data in that market. Estimates for collection tracking — not an appraisal or a quote.
Check recent UK sold prices on eBay →
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