Pokémon sets › Steam Siege › Ninja Boy [Reverse Holo]

Steam Siege Ninja Boy [Reverse Holo] Pokémon card

Ninja Boy [Reverse Holo] #103

Steam Siege · 2016 · Uncommon

Ungraded · UK

£0.87

PSA 10 · UK

£26.68

Ungraded · US

$0.94

PSA 10 · US

$36.15

Medium confidence 78th most valuable of 210 priced cards in Steam Siege

Solid guide price from market data — liquid, well-sampled card, 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 30.7× the ungraded price — £0.87 raw against £26.68 graded.

UK ungraded · 15 readings, May 2026 to Aug 2026 +97.7%

30 days+107.1% 90 days+97.7%

Peaked at £1.45 in August 2026; lowest £0.41 in July 2026. PSA 10 moved +9.2% over a comparable period.

UK price month by month

Month	UK ungraded
May 2026	£0.44
June 2026	£0.47
July 2026	£0.42
August 2026	£0.87

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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