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Castform #66 Pokémon card from Japanese Undone Seal
Japanese

Castform 66/83

Undone Seal· Language: Japanese

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Castform #66 from Japanese Undone Seal currently trades at $3.96 raw, with PSA 10 copies reaching $149.87: a 37.8x grade premium. The card has moved up 27.3% over the past 30 days and up 4.5% over 90 days, suggesting sustained buying interest.
Current Prices (USD)
Ungraded
$3.96
PSA 7
$46.99
PSA 8
$46.99
PSA 9
$46.99
PSA 10
$149.87
ACE 10
—
BGS 10 Black
$975.00
CGC 10 Pristine
$108.00
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Raw Price Trend
7d
+0.0%
30d
+27.3%
90d
+4.5%
180d
—
1y
+4.5%
2y
+1.8%
5y
—

Quick price facts

Castform 66/83 from Undone Seal has a current raw market value of $3.96.

Current raw value
$3.96
PSA 9 value
$46.99
PSA 10 value
$150
Raw value 30d
+27.3%
PSA 10 premium vs raw
37.8× raw
View all cards from Undone Seal →
Collector Intel
37.8x
Raw → PSA 10
High-risk grade
11.9x
Raw → PSA 9
Grade multiplier
+27.3%
30d Price Move
Rising
Steady
Price Stability
0.0% swing this week

Calculated from price history, PSA population data, and market trends. Not financial advice.

Grading Calculator

Figures below are the gross raw-to-PSA-10 spread. PSA grading fees vary by card value and service tier — check psacard.com/services for the fee applicable to this card. Assumes a perfect PSA 10; actual outcome depends on card condition.

⚠️ High-variance grade. PSA 10 is 38x the raw price. The expected value accounts for the realistic probability.
$4
Raw Price
$150
PSA 10 Value
+$146
Gross Premium (PSA 10)
before PSA fees
Grade Multiples vs Raw
PSA 9$4711.9x raw
PSA 10$15037.8x raw

Frequently asked questions

How much is Castform #66 from Japanese Undone Seal worth?+
Castform #66 from Japanese Undone Seal currently reads Raw: $3.96, PSA 9: $46.99, PSA 10: $150 in our aggregated recent-sales price guide. The guide is rebuilt nightly from sold-sales data across the major Pokémon TCG marketplaces, never asking prices.
Is Castform #66 worth grading?+
The PSA 10 price of $150 is 37.8× the raw price of $3.96. Grading fees vary by card value and PSA service tier — see PSA's current fee page before submitting.
Where do PokePrices Castform #66 prices come from?+
Raw, PSA 9 and PSA 10 figures come from our aggregated recent-sales price guide, rebuilt nightly from sold-sales data across the major Pokémon TCG marketplaces. The displayed values are guide numbers, not individual listings. PSA population data is sourced directly from PSA's public population reports. Asking prices are never used; only confirmed sales activity feeds the guide.