Rocket's Secret Experiment
Gym Challenge · #120 · Uncommon · Vintage · 2000
Pulling Rocket's Secret Experiment in a Gym Challenge pack is about 100% (Uncommon slot). Published, provably-fair odds you can verify.
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Rocket's Secret Experiment market value
Rocket's Secret Experiment (Gym Challenge #120) has a live market value of 2,390 Sparks, about $23.90 at the latest market price. That market price for Rocket's Secret Experiment was last updated on October 19, 2026. On PackLab one Spark equals one cent of card value, so 2,390 Sparks is the figure shown for Rocket's Secret Experiment in the set browser, on this page and in your vault after you pull it. If you pull Rocket's Secret Experiment, you can sell it back instantly at 85% of market value, which comes to 2,031 Sparks at the current price. Sparks have no cash value and are only used on PackLab. A Gym Challenge pack is 21,300 Sparks; this card's market value is 2,390 Sparks. Among the 132 priced cards in Gym Challenge, Rocket's Secret Experiment is the 38th most valuable. The median priced card in the set is 665 Sparks, and the most valuable card is Erika's Venusaur at 77,945 Sparks.
How to pull Rocket's Secret Experiment
In a Gym Challenge pack, the Uncommon slot shows an Uncommon card about 100% of the time. Rocket's Secret Experiment is one of 42 priced Uncommon cards in Gym Challenge that can fill that result, so landing this exact card is less likely than the rarity figure. These are the published odds for Gym Challenge: the full slot-by-slot table is on the Gym Challenge page, and the odds page explains how each set's rates are built. Every Gym Challenge box commits its card order before the first pack is sold, so each rip can be checked once the box sells out.
Rarity and era
Rocket's Secret Experiment is an Uncommon card, number 120 in Gym Challenge. Gym Challenge lists 42 Uncommon cards out of 132 cards in total, about 32% of the set list. Among the 42 priced Uncommon cards, market values run from 2 Sparks to 6,023 Sparks, and Rocket's Secret Experiment ranks 7th of them. Gym Challenge is part of the Gym series and sits in the Vintage era of the PackLab catalog. Vintage sets come from the early years of the hobby, when holographic rares were the main chase and sealed packs were far fewer.
About Gym Challenge
Gym Challenge was released on October 16, 2000 and lists 132 cards on PackLab, 132 of them with a live market price. Together, the priced cards in Gym Challenge carry a combined market value of 733,069 Sparks. By market value, Rocket's Secret Experiment sits just below Giovanni's Pinsir (2,459 Sparks) and just above Sabrina (2,368 Sparks).
