Set Guide
Rarest & Most Expensive Cards in Pokemon Steam Siege
Gardevoir EX #116 is the most expensive Pokemon Steam Siege card at about £81.11. The rarest cards are the set's 2 Secret Rares. Released 3 August 2016, the set has 116 cards, ranked below by market price and by printed rarity.
- Chase card
- Gardevoir EX #116
- £81.11
- Cards worth £10+
- 8 of 116
- priced cards
- Median card
- £0.21
- per priced card
- Top rarity tiers
- 2 Secret Rare
- 21 Ultra Rare
- 32 Rare
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Top 10 most expensive Steam Siege cards
Prices as of 22 October 2026.
#1 Most Expensive
Gardevoir #116
Secret Rare
A Fairy-type card with 170 HP. One listed attack is Link Blast (30+ damage).
£81.11
Source: $108.48 from tcgplayer market
Provider updated 15 October 2026
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#2 Most Expensive
Gardevoir #112
Ultra Rare
A Fairy/Psychic-type card with 210 HP. One listed attack is Despair Ray (110+ damage).
£43.08
Source: $57.62 from tcgplayer market
Provider updated 15 October 2026
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#3 Most Expensive
Volcanion #115
Secret Rare
A Fire/Water-type card with 180 HP. One listed attack is Volcanic Heat (130 damage).
£26.61
Source: $35.59 from tcgplayer market
Provider updated 15 October 2026
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#4 Most Expensive
Steelix #109
Ultra Rare
A Metal/Fighting-type card with 240 HP. One listed attack is Canyon Axe (160 damage).
£21.72
Source: $29.05 from tcgplayer market
Provider updated 15 October 2026
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#5 Most Expensive
Gardevoir #111
Ultra Rare
A Fairy-type card with 170 HP. One listed attack is Link Blast (30+ damage).
£20.04
Source: $26.80 from tcgplayer market
Provider updated 15 October 2026
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#6 Most Expensive
Gardevoir #79
Ultra Rare
A Fairy/Psychic-type card with 210 HP. One listed attack is Despair Ray (110+ damage).
£18.01
Source: $24.09 from tcgplayer market
Provider updated 15 October 2026
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#7 Most Expensive
Steelix #108
Ultra Rare
A Metal-type card with 180 HP. One listed attack is Wild Edge (80+ damage).
£13.09
Source: $17.51 from tcgplayer market
Provider updated 15 October 2026
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#8 Most Expensive
Professor Sycamore #114
Ultra Rare
Illustrated by Yusuke Ohmura.
£10.56
Source: $14.13 from tcgplayer market
Provider updated 15 October 2026
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#9 Most Expensive
Steelix #68
Ultra Rare
A Metal/Fighting-type card with 240 HP. One listed attack is Canyon Axe (160 damage).
£8.41
Source: $11.25 from tcgplayer market
Provider updated 15 October 2026
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#10 Most Expensive
Volcanion #107
Ultra Rare
A Fire/Water-type card with 180 HP. One listed attack is Volcanic Heat (130 damage).
£7.33
Source: $9.80 from tcgplayer market
Provider updated 15 October 2026
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Top 10 rarest Steam Siege cards
The highest listed tier in Steam Siege is Secret Rare, with 2 of the 10 cards in the rarity shortlist. The remaining 8 cards appear across 1 lower printed rarity category. Printed rarity is a checklist category, not a measured pull rate or population count.
Printed rarity labels were captured 27 October 2026.
- #1
Gardevoir EX #116Secret Rare
£81.11
- #2
Volcanion EX #115Secret Rare
£26.61
- #3
M Gardevoir EX #112Ultra Rare
£43.08
- #4
M Steelix EX #109Ultra Rare
£21.72
- #5
Gardevoir EX #111Ultra Rare
£20.04
- #6
M Gardevoir EX #79Ultra Rare
£18.01
- #7
Steelix EX #108Ultra Rare
£13.09
- #8
Professor Sycamore #114Ultra Rare
£10.56
- #9
M Steelix EX #68Ultra Rare
£8.41
- #10
Volcanion EX #107Ultra Rare
£7.33
What Steam Siege cards are worth
Gardevoir EX is the chase card at about £81.11, roughly 25% of the combined value of the 116 priced cards in the set. 8 cards are worth £10 or more, and the median card is worth about £0.21, so most of a set's value sits in a handful of pulls.
Usable price data is available for 116 of 116 cards in the set checklist. Within the top 10, Gardevoir EX is about 11.1 times Volcanion EX, the lowest-priced card shown, when compared in GBP. These are market indicators for a watchlist, not guaranteed sale prices.
How we rank these cards
Price ranking: For each card, we use the first available value in this order: TCGplayer market, mid, then low; if none is available, Cardmarket trend, 7-day average, then 30-day average. We convert USD and EUR values to GBP using the latest daily reference exchange rates before comparing them. Price changes compare our own daily GBP snapshots over the last 30 days.
Rarity ranking: We order the checklist by printed rarity label: Special Illustration Rare, Mega Hyper Rare, Hyper Rare, Secret Rare, Illustration Rare, Ultra Rare, Double Rare, Holo Rare, Ace Spec Rare, Shiny Rare, Trainer Gallery, Gallery Rare, Promo, other Rare, Uncommon, then Common. Cards in the same tier are ordered by market price, highest first. Printed rarity does not measure pull odds, print runs or graded population.
Converted values are comparison estimates; check the marketplace listing for its current price, condition, shipping and availability.