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Rocket's Secret Experiment #T91, Normal, Challenge from the Darkness

Japanese edition

  • Card number: #T91
  • Rarity: Uncommon
  • Finish: Non-Holo

A PSA 9 Rocket's Secret Experiment #T91 Normal from Challenge from the Darkness has a TCGBerg fair value of $26 as of Nov 13, 2026. TCGBerg has recorded 8 PSA 9 sales of this card, the latest on Aug 23, 2026. PSA has graded 56 copies at PSA 9.

TCGBerg fair valuePSA 9
As of Nov 13, 2026
$26up 0.8%30-day change

TCGBerg Algorithm (estimated from recorded sales).

Fair value3 months
Last sale$20Aug 23, 202621.7% below fair
5-sale avg$21Jul 23Aug 23
Population · PSA 9
56
Market cap
$1.4K
Volatility
0.8%
YTD
↑ 12.2%
Sales evidence
Strong

TCGBerg fair value · PSA 9

$26

30D0.8%YTD12.2%
Sales evidenceStrong
Market cap
$1.4K
fair value x population
Population
56
graded copies
Last sale
$20
-21.7% vs fair
5-sale avg
$21
recent sales
Grading

Price history

Open terminalPro

Weekly fair value for PSA 9.

Open in TerminalCandles, every grade, full historyPro

What the evidence says

The last PSA 9 sale, $20 on Aug 23, 2026, sits 21.7% below the $26 fair value. The value weighs 7 PSA 9 sales from the past year, not the latest one alone. Its confidence band runs from $25 to $26. A PSA 10 ($150) is worth 5.9 times a PSA 9 ($26). Over the past 30 days the PSA 9 value has risen 0.8%.

TCGBerg fair value by grade

Value at each grade and ungraded condition. Log scale. Tap a row to switch the whole page.

  • Raw NM$3.84Ungraded · market price
  • Raw LP$1.87Ungraded · market price
  • Raw MP$1.06Ungraded · market price
  • Raw HP$1.00Ungraded · market price
  • Raw Damaged$0.65Ungraded · market price
hatched = market price, not a TCGBerg fair value

Behind the scenes

What goes into this price, and how much we know.

Recent sales

17 tracked

Each sale against the grade's fair value on the day it sold.

  • $420
    Oct 30, 2026 · via eBay
    PSA10above fair value by 180.4%
  • $120
    Oct 1, 2026 · via eBay
    PSA10below fair value by 13.0%
  • $20
    Aug 23, 2026 · via eBay
    PSA9below fair value by 5.1%
  • $21
    Jul 24, 2026 · via eBay
    PSA9below fair value by 1.4%
  • $16
    Jul 23, 2026 · via eBay
    PSA8below fair value by 4.9%

12 more sales with Pro

Up to 20 recent sales, each with its venue and its gap to fair value.

Includes a sale 27.3% below fair value

All grades matrix

Every grade we track for this printing.

  • PSA10$150
    1d 0.0%7d 0.2%30d 7.1%
    Pop
    27
    Mcap
    $4.1K
    Evidence
    Moderate
    Last
    $420
  • PSA9$26
    1d 0.2%7d 0.4%30d 0.8%
    Pop
    56
    Mcap
    $1.4K
    Evidence
    Strong
    Last
    $20
  • PSA8$19
    1d 0.1%7d 0.4%30d 2.3%
    Pop
    13
    Mcap
    $253
    Evidence
    Moderate
    Last
    $16
PSA10$15027$4.1Kup 0.2%up 7.1%up 1.4%Moderate$4202w ago
PSA9$2656$1.4Kdown 0.4%up 0.8%up 18.7%Strong$203mo ago
PSA8$1913$253down 0.4%down 2.3%up 17.2%Moderate$164mo ago
PSA7$183$550.0%down 8.0%up 10.2%Sparse-
PSA6$184$730.0%down 7.3%up 16.0%Sparse$134mo ago
PSA5$182-0.0%down 7.3%up 16.0%Sparse-
Raw$3.84--down 3.3%down 5.7%down 24.4%--

PSA population report

105 graded copies of Rocket's Secret Experiment Normal across 6 grades.

PSA 10
27 · 26%
PSA 9
56 · 53%
PSA 8
13 · 12%
PSA 7
3 · 2.9%
PSA 6
4 · 3.8%
PSA 5
2 · 1.9%

PSA 9 makes up 53% of graded copies: 56 of 105. It’s the most common grade for this card.

Analysis

Rocket's Secret Experiment - Normal at PSA 10 carries a TCGBerg fair value of $150 as of 2026-11-13. We track a TCGBerg fair value across 6 grades from Challenge from the Darkness, from PSA 7 up to PSA 10. A graded population of 27 copies sits behind the PSA 10 grade. The PSA 10 valuation rests on moderate sales evidence. Over the past 30 days, the PSA 10 TCGBerg fair value has risen 7.1%.

PSA 9 - frequently asked

How much is a PSA 9 Rocket's Secret Experiment - Normal from Challenge from the Darkness worth?
$26 as of 2026-11-13, the model-derived TCGBerg fair value for a PSA 9 Rocket's Secret Experiment - Normal from Challenge from the Darkness. It rests on strong sales evidence. This estimate is not a guaranteed sale price.
What is the graded population of a PSA 9 Rocket's Secret Experiment - Normal from Challenge from the Darkness?
56 copies have been graded at PSA 9, the recorded graded population, not the number of copies printed.
How has the PSA 9 Rocket's Secret Experiment - Normal from Challenge from the Darkness price moved recently?
Its TCGBerg fair value has risen 0.8% over the past 30 days.
What did a PSA 9 Rocket's Secret Experiment - Normal from Challenge from the Darkness last sell for?
The most recent recorded sale was $20 on 2026-08-23. This recorded sale is separate from the model-derived fair value.