Rocket's Secret Experiment #120 Gym Challenge 1st Edition Price

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

Rocket's Secret Experiment #120 (1st Edition, Uncommon) from Gym Challenge (2000) has a market price of $23.90 raw as of October 14, 2026, the TCGplayer market price for this exact printing. It sits well above the set's median card ($6.00), ranking #63 of 263 priced printings. Over the last 30 days the price has edged up (+6.7%), +2.6% in the last week, +147.4% over 90 days. Its 180-day range is $9.66 to $23.90 — it is trading near the top of that range.

Graded copies of Rocket's Secret Experiment sell for more than raw. PSA 9 copies go for around $70.00, about 2.9× 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 upward. Momentum is pointing up: the price is higher across the windows we track (+6.7% over 30 days, +2.6% over 7 days, +147.4% 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.