Ninja Boy #103 Steam Siege Price

Ninja Boy #103 price, trend & prediction

Ninja Boy #103 (Normal, Uncommon) from Steam Siege (2016) has a market price of $0.14 raw as of October 14, 2026, the TCGplayer market price for this exact printing. For context, the median Steam Siege card is $0.45; this one ranks #203 of 209 priced printings. Over the last 30 days the price has held steady (+0.0%), +7.7% in the last week, +7.7% over 90 days. Its 180-day range is $0.13 to $0.20.

Ninja Boy #103 price prediction: if recent momentum continues, the 30-day trend for this card is upward. Momentum is pointing up: the price is higher across the windows we track (+0.0% over 30 days, +7.7% over 7 days, +7.7% over 90 days). This is a read of past price moves, not a model forecast and not investment advice — see the forecast methodology and public accuracy scoreboard for how our ML outlooks are built and scored.