The current value of Ninja Boy (Steam Siege #103) is €0.03, updated July 27, 2026, based on the latest market floor tracked by RareBit.

STS · #103 · UNCOMMON

Ninja Boy

Steam Siege · Uncommon · illus. Megumi Mizutani

ENNM

Current value · NM · EN

€0.03

Cardmarket EN · 217 observations

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7d avg

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30d avg

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90d high

€0.03

90d low

€0.03

About this card

Ninja Boy is a Trainer card from the Steam Siege set (STS #103). Its rarity is Uncommon. It was illustrated by Megumi Mizutani.

Price history

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CM Low NMTCGplayer USCM DECM FRCM ESCM IT

Pro analysisRead the full analysis

eBay Graded

eBay GradedAll PSA listings on eBay

• 10
  $31.29
• 9
  $14.99

Attributes

SetSteam Siege

Number#103

RarityUncommon

ArtistMegumi Mizutani

Languages—

SourcesPRICECHARTING · CARDMARKET · TCGPLAYER · CARDTRADER

Population & conditions

NEAR MINT · 149

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Prices updated Jul 27, 2026