What's your copy worth?
What this price is based on
High confidence19 sales in 90 days, closely clustered.
What each version actually sells for
Every figure is the median of real completed sales whose listing claimed that printing and condition — not a percentage of the headline price. A dash means we haven't seen enough sales of that exact version to publish one.
Recent Raw sales
- Aug 15, 2026eBay — Rocket's Secret Experiment 120/132 Uncommon Gym Challenge Pokemon Unlimited NMNMUnlimited$6.00
- Aug 12, 2026eBay — Rocket's Secret Experiment 120/132 Uncommon Gym Challenge Pokemon Unlimited LPLPUnlimited$4.99
- Aug 10, 2026eBay — Rocket's Secret Experiment 120/132 Uncommon Gym Challenge Pokemon Unlimited LPLPUnlimited$4.99
- Aug 10, 2026eBay — Rocket's Secret Experiment 120/132 Gym Challenge Pokemon Unlimited NMNMUnlimited$5.74
- Aug 8, 2026eBay — Rocket's Secret Experiment 120/132 Uncommon Gym Challenge Pokemon Unlimited MPMPUnlimited$4.49
- Jul 31, 2026eBay — Rocket's Secret Experiment 120/132 Uncommon Gym Challenge Pokemon Unlimited LPLPUnlimited$1.50
- Jul 30, 2026eBay — Rocket's Secret Experiment 120/132 Uncommon Gym Challenge Pokemon Unlimited LPLPUnlimited$3.00
- Jul 24, 2026eBay — ROCKET'S SECRET EXPERIMENT 120/132 UNCOMMON GYM CHALLENGE UNLIMITED LP POKEMONLPUnlimited$3.40
By grade
- Raw$4.2722 sales
- CGC 0.5$5.003 sales
- CGC 8.5$7.202 sales
- CGC 9$15.601 sale
From 28 completed sales recorded between Apr 27, 2026 and Aug 15, 2026. Sold prices only — asking prices are never counted. The range is wide because these sales span different printings and conditions — 1st Edition, Shadowless and Unlimited copies all carry this card's name, and they trade at very different levels. Each sale above is labelled with what its listing claimed, so you can see which ones describe the same object. Treat the median as the typical copy, not the range.
Grade it or not
NOT WORTH ITBased on 6 graded sales and 1,889,841 pop-report entries for a near-mint copy.
See the numbers — Trader plan and aboveBuy this card
✨ Is it worth it?
An AI market read of this card — value, momentum, grading economics, liquidity. It lays out the data; you decide.
Rocket's Secret Experiment is a Uncommon Pokémon card from Gym Challenge (#120), illustrated by Ken Sugimori. It's a Trainer card. Its current blended market value is $13.29 ungraded, with a PSA 10 worth around $40 — a gem-mint grading premium of roughly 3× the raw value. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.
Prices last updated 20 August 2026.
The receipts
Price history · Raw
We'll email you when this card's value crosses your target.
Verified sales history2 in 90 days✓ real completed listings
| Date | Grade | Price | Cert |
|---|---|---|---|
| 31 May 2025 | PSA 5 | $25.00 | #98771613 ✓ |
| 22 Sep 2024 | PSA 9 | $19.99 | #95995833 ✓ |
Should you grade it?
Expected return across every likely grade, after fees — the realistic average, not the best case. Only 10.5% of copies gem (PSA 10 best case −$44); most land at PSA 9 or below.
The odds
Rocket's Secret Experiment is a Uncommoncard — a guaranteed slot in every pack, not a rarity gamble, so there's no pull-odds figure for it.
Estimates only. Pack odds come from CardTrack's pack model (the same one behind the pack simulator) — not an official rate. Grading odds are the real cumulative PSA population, which skews toward nicer, resubmitted copies, so it overstates the true first-submission gem rate. Full grade-by-grade breakdown below.
Grade-by-grade ROI & risk-adjusted outcomesNet vs raw per target grade, plus the probability-weighted distribution
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $39.99 | $70 | −$44 | 3.0× |
| PSA 9 | $19.99 | $70 | −$63 | 1.5× |
⚖️ Risk-adjusted return
Best case isn't the whole story. Weighting every grade by how often it actually happens, across 19 PSA-graded copies:
| Likely outcome | Chance | Value |
|---|---|---|
| PSA 10 | 10.5% | $40.00 |
| PSA 9 | 42.1% | $20.00 |
| PSA ≤8 | 47.4% | $13.00 |
Net = graded value − raw value − grading cost (tier fee + ~$20 round-trip shipping), using PSA fees as of 2026-06-28; the paused PSA Value tier is excluded so this isn't overstated. Gem rate is estimated from cumulative PSA population, which skews toward nicer, resubmitted copies — so it overstates the true grade rate. Treat it as a guide, not a guarantee.
Population across gradersPSA, CGC & BGS — every grade, with gem rates
Only 11% of 19 PSA-graded Rocket's Secret Experiment copies are a gem-mint 10 (2 of 19) — the rest grade lower.
Real graded population from PSA, CGC & BGS — a lower gem rate means a Rocket's Secret Experiment 10 is harder to pull.
Copies for sale right now
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All grades & conditions
Every grade we pricePSA / CGC / BGS ladder with per-grade population
| Grade | Relative value | Price |
|---|---|---|
| PSA 10pop 2 | $40$34–$46 | |
| PSA 9pop 8 | $20$17–$23 |
Raw condition ladderNM → damaged, with real sold medians where we have them
Price by printingBase vs reverse holo vs 1st edition — priced separately
Price by variant
TCGplayer market price per printing — reverse holo, 1st edition and unlimited often differ sharply.
Market dataCross-market spread, EU price, momentum & community buzz
Cross-market prices
196% spreadCurrently 196% cheaper on PriceCharting than TCGplayer. These are independent market prices for the same card — a wide gap can mean a buying opportunity. Informational only, not arbitrage advice.
Market signal
Derived from this card's 90-day price history, recent trend and cross-market price gap. Informational, not advice.
🇪🇺 Cardmarket price · Europe
36% cheaper than the USCard textAttacks, abilities, weakness / resistance / retreat
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Card detailsSet, rarity, artist, Pokédex & specs
More from Gym Challenge
Frequently asked questions
How much is Rocket's Secret Experiment (Gym Challenge #120) worth?
As of 20 August 2026, Rocket's Secret Experiment from Gym Challenge is worth approximately $13.29 ungraded (near-mint), and around $40 in PSA 10 gem mint. Values are blended from real Cardmarket, eBay sold and TCGplayer prices and update daily.
What is the PSA 10 price for Rocket's Secret Experiment?
A PSA 10 (gem mint) Rocket's Secret Experiment from Gym Challenge is worth around $40 — roughly 3× the raw ungraded value of $13.29.
Should I grade my Rocket's Secret Experiment?
A PSA 10 sells for about $40 versus $13.29 raw — roughly a 3× uplift. Grading is worth it when that premium comfortably beats the grading fee and the card is clean enough to have a real shot at a 10. See the "Should you grade it?" estimate above for net profit per grade.
Is Rocket's Secret Experiment rare?
Rocket's Secret Experiment is a Uncommon card from Gym Challenge (card #120), illustrated by Ken Sugimori. Its current blended market value is $13.29 ungraded.
Cite & embed this card
Free to use with attribution to CardTrack.
Rocket's Secret Experiment (Gym Challenge #120) — Pokémon market value $13.29, PSA 10 $39.99. Source: CardTrack, https://cardtrack.com/pokemon/card/gym-challenge/rocket-s-secret-experiment-120<iframe src="https://cardtrack.com/embed/card?id=gym2-120" width="100%" height="160" style="border:0;max-width:460px" title="Rocket's Secret Experiment price — CardTrack" loading="lazy"></iframe>
<p style="font:12px system-ui">Source: <a href="https://cardtrack.com">CardTrack</a></p>