Pokémon sets › Japanese Master Kit › Grass Energy
Grass Energy #11
Low confidence 17th most valuable of 19 priced cards in Japanese Master Kit
Rough guide — limited market data — pre-2010 condition spread, low-value, bulk-traded, 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 49.2× the ungraded price — £0.90 raw against £44.24 graded.
Peaked at £0.91 in July 2026; lowest £0.89 in August 2026. PSA 10 moved -0.4% over a comparable period.
UK price month by month
| Month | UK ungraded |
|---|---|
| July 2026 | £0.91 |
| August 2026 | £0.90 |
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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![Darkness Energy [Alt Art]](https://pub-4919690d36064f94806d666a71d998a0.r2.dev/jpv2/japanese-master-kit/darkness-energy-alt-art-011-012.webp)
