Rocket's Secret Experiment
Gym Challenge · #120/132 · Uncommon · 2000
Printings & price history
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Graded values
Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.
PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.
Graded population census · updated 2026-07-08
Population data from PriceCharting, updated monthly.
How much is Rocket's Secret Experiment #120/132 worth?
Rocket's Secret Experiment #120/132 is a Uncommon card from Gym Challenge (2000) — today it trades at roughly $4.18 ungraded. Across the 2 printings we track, copies run anywhere from $3.00 to $96.95 depending on the version you're holding.
Grading changes the math on this one: a PSA 10 is valued around $39.99, roughly 9.6x the raw price, while a PSA 9 sits near $19.99. 137 copies have been graded to date, and 18% of them came back a 10 — worth knowing before you pay grading fees.
We update this valuation every night from live market data and verify it against real completed sales — see the chart above for how Rocket's Secret Experiment has moved over time.
