Rocket's Secret Experiment #120 Gym Challenge Unlimited Price

Rocket's Secret Experiment #120 price, trend & prediction

Rocket's Secret Experiment #120 (Unlimited, Uncommon) from Gym Challenge (2000) has a market price of $4.11 raw as of October 12, 2026, the TCGplayer market price for this exact printing. For context, the median Gym Challenge card is $6.00; this one ranks #159 of 263 priced printings. Over the last 30 days the price has held steady (+1.0%), −7.0% over 90 days. Its 180-day range is $3.93 to $4.65.

Graded copies of Rocket's Secret Experiment sell for more than raw. PSA 9 copies go for around $70.00, about 3.0× the raw price (4 recent sales) — thin data, treat as indicative. Other grades we track: CGC 8.5 at $29.99, PSA 8 at $18.25, PSA 6 at $14.99. Graded medians come from recent eBay sold listings and refresh daily.

Rocket's Secret Experiment #120 price prediction: if recent momentum continues, the 30-day trend for this card is downward. Momentum is pointing down: the price is lower across the windows we track (+1.0% over 30 days, +1.2% over 7 days, −7.0% 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.