Set market cap
116 cards tracked dailyWhat to target in Steam Siege
The top 10 cards are 77% of the set’s $435.00 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 | $110.87 | $1,375.00 |
| 2 |  M Gardevoir-EX | #112 | Rare Ultra | $57.28 | $801.40 |
| 3 |  Volcanion-EX | #115 | Rare Secret | $35.95 | $1,262.49 |
| 4 |  Gardevoir-EX | #111 | Rare Ultra | $28.19 | $1,109.00 |
| 5 |  M Steelix-EX | #109 | Rare Ultra | $28.02 | $713.13 |
| 6 |  M Gardevoir-EX | #79 | Rare Holo EX | $23.95 | $175.00 |
| 7 |  Steelix-EX | #108 | Rare Ultra | $18.17 | $1,655.91 |
| 8 |  Professor Sycamore | #114 | Rare Ultra | $12.71 | $159.36 |
| 9 |  M Steelix-EX | #68 | Rare Holo EX | $10.43 | $252.50 |
| 10 |  Volcanion-EX | #107 | Rare Ultra | $9.82 | $869.40 |
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 $110.87 → PSA 10 $1,375.00 12.4×EV +$380.12M Gardevoir-EX #112raw $57.28 → PSA 10 $801.40 14×EV +$264.06Volcanion-EX #115raw $35.95 → PSA 10 $1,262.49 35.1×EV +$336.54Gardevoir-EX #111raw $28.19 → PSA 10 $1,109.00 39.3×EV +$304.95M Steelix-EX #109raw $28.02 → PSA 10 $713.13 25.5×EV +$204.32M Gardevoir-EX #79raw $23.95 → PSA 10 $175.00 7.3×EV +$38.56Premiums and EV use tonight’s PSA prices and this set’s real gem rates — not projections.
What collectors say about Steam Siege
Creators on Steam Siege
Synthesized from widely-reported collector consensus — see a take that’s off? Use the report link on any card page.
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.
eBay →The archival-safe standard for cards you handle — double-sleeve chase cards with a perfect-fit inner.
eBay →Sleeve + toploader is the minimum for anything you might grade or sell raw.
eBay →Side-loaders keep cards from sliding out; zip closure keeps dust and drops away.
eBay →Affiliate links — purchases support CardPrice at no extra cost. Full guide: how to build & store a master set.
Sealed products
![Battle Heart Tin [Pikachu EX]](https://api.cardprice.com/images/products/123441.jpg?v=5)
![Battle Heart Tin [Magearna EX]](https://api.cardprice.com/images/products/123440.jpg?v=5)
![Battle Heart Tin [Volcanion EX]](https://api.cardprice.com/images/products/123442.jpg?v=5)
![Steam Siege 3 Pack Blister [Azelf]](https://api.cardprice.com/images/products/120704.jpg?v=5)
![Steam Siege 3 Pack Blister [Rayquaza]](https://api.cardprice.com/images/products/120705.jpg?v=5)
![Steam Siege Sleeved Booster Pack Art Bundle [Set of 4]](https://api.cardprice.com/images/products/276599.jpg?v=5)
All cards 116
Most valuable cards in Steam Siege
- Gardevoir-EX #116 — $110.87
- M Gardevoir-EX #112 — $57.28
- Volcanion-EX #115 — $35.95
- Gardevoir-EX #111 — $28.19
- M Steelix-EX #109 — $28.02
- M Gardevoir-EX #79 — $23.95
- Steelix-EX #108 — $18.17
- Professor Sycamore #114 — $12.71
- M Steelix-EX #68 — $10.43
- Volcanion-EX #107 — $9.82
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 $434.93, with Gardevoir-EX #116 as the most valuable card at $110.87. Prices update nightly from live market data.
Steam Siege — FAQ
How many cards are in Steam Siege?
Steam Siege contains 116 cards — 114 in the base set plus secret rares.
What is the most valuable card in Steam Siege?
Gardevoir-EX #116 at $110.87, based on live market data updated nightly.
How much is a complete Steam Siege set worth?
A complete raw set is currently worth about $434.93 at market prices.
When was Steam Siege released?
Steam Siege was released on 2016-08-03.