Ninja Boy Steam Siege #103

Card #103 · Illustrated by Megumi Mizutani

TrainerSupporter

Market value · ungraded

$0.35

Blended across Fanatics + TCGplayer + Cardmarket
Sold prices, not asking · Updated 5 July 2026
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Estimated value · Near Mint

$0.35

Pro view — Trader plan and above

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Ninja Boy is a Uncommon Pokémon card from Steam Siege (#103), illustrated by Megumi Mizutani. It's a Supporter Trainer card. Its current blended market value is $0.35 ungraded. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.

Prices last updated 5 July 2026.

#2 most valuable Ninja of 2 #97 most valuable in Steam Siege of 116

Raw price by condition

Reverse Holofoil · live market via TCGplayer

NMNear Mint$39.99

LPLightly Played$28.30

MPModerately Played$12.60

HPHeavily Played$11.69

7-dayflat

30-dayflat

90-dayflat

All-time high$40

All-time low$17

Price by variant

Reverse Holo$0

Normal$0

TCGplayer market price per printing — reverse holo, 1st edition and unlimited often differ sharply.

Graded prices

No graded sales tracked for this card yet — see the raw estimate above.

Price history · raw near-mint

Not enough price history to chart yet.

Recent sold prices

Last sold price

CGC 9 · 16 Mar 2026

Typical CGC 9

Sales · last 90 days

How often it sells

Rarely sells

0 in last 30 days

CGC 92016 Pokemon XY Steam Siege Reverse Holo Ninja Boy #103 CGC 9 MINTWeekly Sunday Auction #217 · 16 Mar 2026$7

Real completed sale prices from Fanatics Collect — weekly and premier auctions plus marketplace Buy It Now sales, refreshed periodically. Grade read from the listing title.

Population across graders

Only 0% of 4 PSA-graded Ninja Boy copies are a gem-mint 10 (0 of 4) — the rest grade lower.

PSA4 gradedPSA 10 · 0 · 0% gem rate

Full grade breakdown (2 grades)

CGC30 gradedCGC 10 · 1 · 3% gem rate

Full grade breakdown (4 grades)

101

8.53

Real graded population from PSA, CGC & BGS — a lower gem rate means a Ninja Boy 10 is harder to pull.

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Where to buy

Check recent sold prices

eBay sold PriceCharting

Market dataCross-market spread, EU price, momentum & community buzz

Cross-market prices

133% spread

Cardmarket · cheapest$0

TCGplayer · dearest$0

Currently 133% cheaper on Cardmarket than TCGplayer. These are independent market prices for the same card — a wide gap can mean a buying opportunity. Informational only, not arbitrage advice.

Market signal

Momentum · 30dFlat 0%

Cross-marketMarkets disagree 133% gap

Derived from this card's 90-day price history, recent trend and cross-market price gap. Informational, not advice.

🇪🇺 Cardmarket price · Europe

57% cheaper than the US

Cardmarket · Europe's largest card market$0

Buy on CardmarketEU

Card text

Choose 1 of your Basic Pokémon in play. Search your deck for a Basic Pokémon and switch it with that Pokémon. (Any attached cards, damage counters, Special Conditions, turns in play, and any other effects remain on the new Pokémon.) Shuffle the first Pokémon into your deck.

You may play only 1 Supporter card during your turn (before your attack).

Card details

SetSteam Siege →

Number#103

RarityUncommon

PokémonAll Ninja cards →

ArtistMegumi Mizutani →

SupertypeTrainer

SubtypesSupporter

Card IDxy11-103

SourceAggregated marketplaces

More from Steam Siege

Frequently asked questions

How much is Ninja Boy (Steam Siege #103) worth?

As of 5 July 2026, Ninja Boy from Steam Siege is worth approximately $0.35 ungraded (near-mint). Values are blended from real Cardmarket, eBay sold and TCGplayer prices and update daily.

Is Ninja Boy rare?

Ninja Boy is a Uncommon card from Steam Siege (card #103), illustrated by Megumi Mizutani. Its current blended market value is $0.35 ungraded.