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Groudon Star Holon Research Tower Pokemon card
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Groudon Star

Holon Research Tower · Pokemon · #056 · Shiny Rare

Groudon Star (#056) is a Shiny Rare card from the Holon Research Tower set in Pokemon. Its current raw market value is $445.15, last updated June 28, 2026. A PSA 10 graded copy runs about $2156.90 — roughly 4.8× the raw price. It's one of the most valuable cards in the set, ranking #4 of 86 priced cards.

Market Price

$445.15

Source: pricecharting · Updated June 28, 2026

Graded Prices

Grade 7$364.99
Grade 8$675.57
Grade 9$1327.50
Grade 9.5$1460.00
PSA 10$2156.90
BGS 10$2804.00
CGC 10$1294.00
SGC 10$1294.00

Card Details

Game
Pokemon
Set
Holon Research Tower
Card Number
056
Rarity
Shiny Rare
Language
Japanese

Frequently asked questions

How much is Groudon Star worth?

Groudon Star from Holon Research Tower (Pokemon) has a current raw market price of $445.15, last updated June 28, 2026. A PSA 10 graded copy is worth about $2156.90.

Is Groudon Star worth grading?

A PSA 10 Groudon Star is valued around $2156.90 versus $445.15 raw — a premium of roughly 4.8×. Grading tends to pay off when that premium comfortably exceeds grading costs and the card is likely to earn a high grade.

Where can I buy or sell Groudon Star?

You can view current Groudon Star listings on TCGPlayer. VendBuddy tracks live Pokemon market prices so card show vendors can confidently buy and sell Groudon Star and thousands of other cards.

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