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Steam Siege Card List

Released
Series
XY
Set code
STS
Cards printed
114 + 2 secret
Rarities
8
Set value
$414
raw, near mint
Cards priced
116
114 printed
Top card
$109
Gardevoir-EX

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The Steam Siege set, part of the XY series, was released on and contains 116 cards tracked by CardTrack, with a combined raw value of around $414. Its most valuable card is the Gardevoir-EX (#116) at $109.41 ungraded, or about $2,000 in PSA 10. 101 of the 116 carry a real graded price too. Every card below shows a blended raw value from real sold results, updated daily.

All 116 Steam Siege Pokémon cards

Starts in card-number order — sort by value, the PSA 10 gap, or the 30-day move.

116 cards

Prices updated · How we price →

Set value over time

Total tracked value of the set since 2021, from PriceCharting sales history — set against the whole Pokémon card market index.

90 days

+9.4%

1 year

+1.2%

All time

+89.9%

As of

2026-10

$4142026-10-05+94.4% since 2021Hover the chart to read any month
$0$217$43420222023202420252026

Indexed over 105 of this set's 116 cards — the ones with enough PriceCharting sales history to track continuously.

Strongest grading opportunities

Ranked by expected net — every grade weighted by how often this card actually earns it, as in the grading ROI calculator. Best case is the PSA 10 outcome, which is why it is the larger number and the one to trust least.

All 16 Steam Siege grading picks →

Steam Siege chase cards

The most valuable cards in Steam Siege: the twelve highest raw values, ranked. PSA 10 is shown where the card has a real graded price.

  1. 1Gardevoir-EX#116 · Rare Secret$109.41PSA 10 $2,000
  2. 2M Gardevoir-EX#112 · Rare Ultra$49.99PSA 10 $450
  3. 3Volcanion-EX#115 · Rare Secret$37.07PSA 10 $800
  4. 4Gardevoir-EX#111 · Rare Ultra$22.89PSA 10 $500
  5. 5M Gardevoir-EX#79 · Rare Holo EX$19.99PSA 10 $223
  6. 6Steelix-EX#108 · Rare Ultra$19.99PSA 10 $800
  7. 7M Steelix-EX#109 · Rare Ultra$17.99PSA 10 $271
  8. 8Professor Sycamore#114 · Rare Ultra$13.66PSA 10 $140
  9. 9Magearna-EX#110 · Rare Ultra$10.69PSA 10 $238
  10. 10Volcanion-EX#107 · Rare Ultra$9.99PSA 10 $490
  11. 11Pokémon Ranger#113 · Rare Ultra$9.37PSA 10 $98
  12. 12Yveltal BREAK#66 · Rare BREAK$8.99PSA 10 $290

Steam Siege booster box & ETB prices

Available to buy now

Live eBay listings matched to this set.

Available to buy nowLive on eBay

Cite & embed this set

Free to use with attribution to CardTrack.

Citation
Steam Siege Pokémon set — 116 priced cards, total set value ~$414 ungraded. Source: CardTrack, https://cardtrack.com/pokemon/set/steam-siege
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<iframe src="https://cardtrack.com/embed/set?slug=steam-siege" width="100%" height="230" style="border:0;max-width:460px" title="Steam Siege set value — CardTrack" loading="lazy"></iframe> <p style="font:12px system-ui">Source: <a href="https://cardtrack.com">CardTrack</a></p>

Frequently asked questions

How much is the Steam Siege set worth?

A complete raw (ungraded) Steam Siege set is worth approximately $414, based on the blended near-mint value of all 116 cards CardTrack tracks in the set. Prices update daily.

How many cards are in Steam Siege?

CardTrack tracks 116 priced cards in the Steam Siege set (set code STS).

What is the most valuable card in Steam Siege?

The most valuable Steam Siege card is the Gardevoir-EX (#116) at about $109.41 ungraded, or around $2,000 in PSA 10 gem mint.

When was Steam Siege released?

The Steam Siege Pokémon TCG set was released on 3 August 2016.

What are the chase cards in Steam Siege?

By current raw value, the Steam Siege chase cards are the Gardevoir-EX (#116, about $109), M Gardevoir-EX (#112, about $50) and Volcanion-EX (#115, about $37).