Set market cap
116 cards tracked dailyWhat to target in Steam Siege
The top 10 cards are 70% of the set’s $462.00 estimated singles cost — plan these first and the rest follows on a normal budget.
| # | Card | Number | Rarity | Market | PSA 10 |
|---|---|---|---|---|---|
| 1 |  Gardevoir-EX | #116 | Rare Secret | $102.41 | $1,700.00 |
| 2 |  M Gardevoir-EX | #112 | Rare Ultra | $55.27 | $462.71 |
| 3 |  Volcanion-EX | #115 | Rare Secret | $39.35 | $455.00 |
| 4 |  M Steelix-EX | #109 | Rare Ultra | $29.73 | $301.66 |
| 5 |  M Gardevoir-EX | #79 | Rare Holo EX | $24.32 | $200.00 |
| 6 |  Gardevoir-EX | #111 | Rare Ultra | $23.43 | $393.83 |
| 7 |  Steelix-EX | #108 | Rare Ultra | $18.55 | $487.50 |
| 8 |  Azumarill | #77 | Uncommon | $12.08 | $699.00 |
| 9 |  Professor Sycamore | #114 | Rare Ultra | $10.88 | $152.75 |
| 10 |  Magearna-EX | #110 | Rare Ultra | $9.33 | $264.88 |
How Steam Siege is built
Rarity breakdown
Price distribution
Most cards are bulk — the set’s value concentrates in a few chase cards.
Singles or sealed?
Sealed product comparison
Steam Siege pull-rate estimates
Community-estimated era averages from large pack-opening aggregates — not official Pokémon data. “Specific card” is the expected packs for ONE particular card of that rarity.
| Rarity | Cards in set | Any pull | Specific card |
|---|---|---|---|
| Rare Holo EX | 6 | 1 in 9 | 1 in 54 |
| Rare BREAK | 7 | 1 in 10 | 1 in 70 |
| Rare Ultra | 8 | 1 in 18 | 1 in 144 |
| Rare Secret | 2 | 1 in 130 | 1 in 260 |
Steam Siege promo cards
Black Star promos tied to Steam Siege — from its ETBs, collection boxes and prerelease events. They live in the XY Black Star Promos set, so a true master-set run includes them separately.
Which Steam Siege cards are worth grading?
Positive expected value after ~$25 fees at live PSA prices and this set's real gem rates.
Gardevoir-EX #116raw $102.41 → PSA 10 $1,700.00 16.6×EV +$375.00M Gardevoir-EX #112raw $55.27 → PSA 10 $462.71 8.4×EV +$136.78Volcanion-EX #115raw $39.35 → PSA 10 $455.00 11.6×EV +$118.99M Steelix-EX #109raw $29.73 → PSA 10 $301.66 10.1×EV +$69.09M Gardevoir-EX #79raw $24.32 → PSA 10 $200.00 8.2×EV +$45.41Gardevoir-EX #111raw $23.43 → PSA 10 $393.83 16.8×EV +$87.83Premiums and EV use tonight’s PSA prices and this set’s real gem rates — not projections.
Protect your Steam Siege cards
This set has 1 cards worth $100+ — sleeve-and-toploader territory at minimum, and the chase cards deserve double-sleeving.
Every card worth more than bulk goes in a sleeve before anything else touches it.
Amazon →eBay →The archival-safe standard for cards you handle — double-sleeve chase cards with a perfect-fit inner.
Amazon →eBay →Affiliate links — purchases support CardPrice at no extra cost. Full guide: how to build & store a master set.
Sealed products
![Steam Siege 3 Pack Blister [Azelf]](https://api.cardprice.com/images/products/120704.jpg?v=3)
![Steam Siege 3 Pack Blister [Rayquaza]](https://api.cardprice.com/images/products/120705.jpg?v=3)
![Battle Heart Tin [Pikachu EX]](https://api.cardprice.com/images/products/123441.jpg?v=3)
![Battle Heart Tin [Volcanion EX]](https://api.cardprice.com/images/products/123442.jpg?v=3)
![Battle Heart Tin [Magearna EX]](https://api.cardprice.com/images/products/123440.jpg?v=3)
![Steam Siege Sleeved Booster Pack Art Bundle [Set of 4]](https://api.cardprice.com/images/products/276599.jpg?v=3)
All cards 116
Most valuable cards in Steam Siege
- Gardevoir-EX #116 — $102.41
- M Gardevoir-EX #112 — $55.27
- Volcanion-EX #115 — $39.35
- M Steelix-EX #109 — $29.73
- M Gardevoir-EX #79 — $24.32
- Gardevoir-EX #111 — $23.43
- Steelix-EX #108 — $18.55
- Professor Sycamore #114 — $10.88
- Magearna-EX #110 — $9.33
- M Steelix-EX #68 — $8.95
About Steam Siege
Steam Siege is a Pokémon TCG expansion in the XY series, released on 2016-08-03. The set contains 116 cards — 114 in the base set plus 2 secret rares. The combined market value of a complete set is currently $418.01, with Gardevoir-EX #116 as the most valuable card at $102.41. Prices update nightly from live market data.