Challenge from the DarknessOriginal · 1999

Rocket's Secret Experiment

NormalJapanese cardUpdated Oct 25, 2026

TCGPlayer market

$4.11

PSA 10: $316.17
PSA 9: $328.23
PSA population: 80
PSA gem rate: 23.8%

Finish

Market prices

Ungraded prices from each marketplace we track, with sales activity where available.

SourcePriceSalesLast salePer weekSignal

TCGPlayer Market USD

$4.11

TCGPlayer Market

USD

$4.11

—

eBay Average USD

$2.32

eBay Average

USD

$2.32

—

eBay Sold USD

$2.33

1 sales

eBay Sold

USD

$2.33

1

—

Graded prices

Average sold price by grading company and grade.

GradeAverage sold price

Grade 10: $316.172 sold
Grade 9: $328.232 sold

Grader	10	9	8
PSA	$3162 sold	$3282 sold	–
CGC	–	$64.88	$4.96

Population report

How many copies each grading company has graded, and at which grade.

PSA graded

80

23.8%

Gem rate

0

2

4

2

11

42

19

12345678910

Match confidence: medium

Price by condition

Ungraded market price for each printing, from Near Mint down to Damaged.

Normal

NM

Near Mint

$4.07

LP

Lightly Played

$1.97

MP

Moderately Played

$1.03

HP

Heavily Played

$1.00

DM

Damaged

$0.65

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About Rocket's Secret Experiment

Rocket's Secret Experiment is a Japanese Pokémon card from Challenge from the Darkness, part of the Original series, released in 1999.

An ungraded copy currently sells for about $4.11. A PSA 10 (Gem Mint) averages $316.17 — about 76.9× the raw price.

PSA has graded 80 copies, 19 of them at PSA 10 (a 23.8% gem rate). Fewer tens usually means a larger premium for a top-graded copy.

PokiFrame tracks Rocket's Secret Experiment across TCGPlayer, Cardmarket and eBay sales so you can check its value before you buy, sell or trade.

Browse every Challenge from the Darkness card →

Rocket's Secret Experiment — common questions

How much is Rocket's Secret Experiment worth?: Rocket's Secret Experiment from Challenge from the Darkness has a market price of $4.11 for an ungraded copy, based on current TCGPlayer and eBay sales data. Condition, print variant and grading all move that number.
What is a PSA 10 Rocket's Secret Experiment worth?: Recent PSA 10 (Gem Mint) sales of Rocket's Secret Experiment averaged $316.17, about 76.9× the ungraded price. A PSA 9 averaged $328.23.
How many PSA 10 Rocket's Secret Experiment are there?: PSA has graded 80 copies of Rocket's Secret Experiment, and 19 of them received a PSA 10 — a gem rate of 23.8%.

Market

$17.50