Pokémon sets › Japanese Holon Research [1st-Edition] › Sunny Castform [1st-Edition]
![Japanese Holon Research [1st-Edition] Sunny Castform [1st-Edition] Pokémon card](https://pub-4919690d36064f94806d666a71d998a0.r2.dev/jpv2/japanese-holon-research/sunny-castform-015-086.webp)
Sunny Castform [1st-Edition] #15
Low confidence 79th most valuable of 85 priced cards in Japanese Holon Research [1st-Edition]
Rough guide — limited market data — pre-2010 condition spread, 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.
Peaked at £3.12 in June 2026; lowest £2.30 in August 2026.
UK price month by month
| Month | UK ungraded |
|---|---|
| May 2026 | £3.11 |
| June 2026 | £2.37 |
| July 2026 | £2.35 |
| August 2026 | £2.31 |
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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