Pokémon sets › Japanese Terastal Festival › Iron Boulder [Master-Ball]

Japanese Terastal Festival Iron Boulder [Master-Ball] Pokémon card

Iron Boulder [Master-Ball] #77

Japanese Terastal Festival · 2024 · No Rarity

Ungraded · UK

£2.83

PSA 10 · UK

£13.46

Ungraded · US

$3.65

PSA 10 · US

$18.24

Low confidence 143rd most valuable of 482 priced cards in Japanese Terastal Festival

Rough guide — limited market data — 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 4.8× the ungraded price — £2.83 raw against £13.46 graded.

UK ungraded · 15 readings, May 2026 to Aug 2026 -16.0%

30 days-1.4% 90 days-16.3%

Peaked at £3.40 in June 2026; lowest £2.80 in August 2026. PSA 10 moved -0.4% over a comparable period.

UK price month by month

Month	UK ungraded
May 2026	£3.38
June 2026	£3.07
July 2026	£2.87
August 2026	£2.83

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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