Pokémon sets › Steam Siege › Gastrodon

Gastrodon #29

Steam Siege · 2016 · Rare

Ungraded · UK

£0.73

PSA 10 · UK

£26.11

Ungraded · US

$0.68

PSA 10 · US

$35.38

Low confidence 88th most valuable of 210 priced cards in Steam Siege

Rough guide — limited market data — low-value, bulk-traded.

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 35.8× the ungraded price — £0.73 raw against £26.11 graded.

UK ungraded · 15 readings, May 2026 to Aug 2026 +14.1%

30 days-39.2% 90 days+25.9%

Peaked at £1.20 in July 2026; lowest £0.44 in June 2026. PSA 10 moved -2.5% over a comparable period.

UK price month by month

Month	UK ungraded
May 2026	£0.58
June 2026	£0.50
July 2026	£1.20
August 2026	£0.73

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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