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Groudon-EX – XY Black Star Promos #XY42
XY Black Star Promos#XY42
FightingPromo
Groudon-EX #XY42 is a Promo card from the XY Black Star Promos expansion. This page tracks this exact printing, not every Groudon-EX card.
Current market price
$19.55
+2.1%
7d
+3.2%
30d
HOLOFOIL · TCGPLAYER · 2026-10-20
1collector is hunting this
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01 · Price history
163 snapshots
Full price history.
Daily market-price snapshots — every data point is a dated price reading, never an estimate.
Groudon-EX #XY42 card details.
Groudon-EX #XY42 is a Promo Fighting-type Pokémon card from XY Black Star Promos, released October 2013. Its current tracked market price is $19.55 for the Holofoil variant, updated October 20, 2026.
Since May 5, 2026, the XY Black Star Promos printing of Groudon-EX #XY42 has ranged from a low of $12.67 (May 5, 2026) to a high of $19.55 (October 20, 2026).
That is a +54.3% move from $12.67 to today's $19.55, at or near its tracked high.
Currently ranked #3,046 by market price across tracked Pokémon cards as of October 20, 2026.
Card number
#XY42
Released
October 2013
Rarity
Promo
Type
Fighting
Supertype
Pokémon
Pokémon
Series
XY
Market source
TCGplayer market price · Holofoil · Updated October 20, 2026
02 · Other printings
5 printings
Every Groudon-EX printing.
Groudon-EX has 5 tracked English printings, including this XY Black Star Promos #XY42 version. At $19.55 it ranks #4 of 5 priced printings; the most valuable is Dark Explorers #106 at $427.46.
04 · Related cards
From the same set
More from XY Black Star Promos.
Highest-priced cards from the same expansion, ordered by current market price.
05 · Same Pokémon
Cross-set · Groudon
More Groudon cards.
Other tracked cards featuring the same Pokémon, across every era it has appeared in.
View all Groudon cards→
06 · Reference desk
Groudon-EX, explained.
Everything about this card — the price, the variants, and how we track it.
How has the Groudon-EX XY Black Star Promos price changed?
Since May 5, 2026, the XY Black Star Promos printing of Groudon-EX #XY42 has ranged from a low of $12.67 (May 5, 2026) to a high of $19.55 (October 20, 2026). That is a +54.3% move from $12.67 to today's $19.55, at or near its tracked high.
Which Groudon-EX printing is worth the most?
Groudon-EX has 5 tracked English printings, including this XY Black Star Promos #XY42 version. At $19.55 it ranks #4 of 5 priced printings; the most valuable is Dark Explorers #106 at $427.46.
Is Groudon-EX from XY Black Star Promos a good investment?
We track prices, not provide investment advice. 1 collector is currently chasing this printing; the price history above shows how its market has moved.
How is the market price determined?
Prices are refreshed daily from TCGplayer market-price data via TCGCSV. Each displayed value applies to the tracked price variant named on the card detail page. It is a market reference, not a guaranteed sale price; condition, grading, location, fees, and timing can change an individual sale. This card's current figure reflects the Holofoil variant.
Where can I buy Groudon-EX?
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Holofoil
$19
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