Pokémon sets › Japanese Challenge from the Darkness › Rocket's Secret Experiment
Rocket's Secret Experiment
Low confidence 67th most valuable of 89 priced cards in Japanese Challenge from the Darkness
Rough guide — limited market data — pre-2010 condition spread, liquid, well-sampled card, 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.
Peaked at £69.45 in July 2026; lowest £1.80 in May 2026. PSA 10 moved +24.3% over a comparable period.
UK price month by month
| Month | UK ungraded |
|---|---|
| May 2026 | £1.80 |
| June 2026 | £2.69 |
| July 2026 | £69.45 |
| August 2026 | £1.88 |
UK guide prices, with the US market alongside — updated 30 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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