Right now: the best rip in Steam Siege is the Booster Pack at $32.85 against $4.73 of expected pulls — a −88% margin after ~15% selling fees, and a 1% chance it actually pays for itself. Figures refresh every two hours.
Steam Siege (August 3, 2016) is the penultimate XY-series set and ships in the era's 10-card pack: a reverse holo plus one rare slot shared by holos, EX cards, BREAK evolutions, full arts and secrets. No separate hit slot. As vintage sealed, packs, boxes and especially the Elite Trainer Box trade at collector premiums, so rip margins model deeply negative by design.
By community estimate the rare slot yields a Pokémon-EX roughly 1 in 8 packs, a BREAK about 1 in 13, a full art near 1 in 30 and a Secret Rare around 1 in 70. The two gold secrets, Gardevoir-EX and Volcanion-EX, sit at the top of the chase list, with full-art M Gardevoir-EX, M Steelix-EX and Steelix-EX behind them and a full-art Professor Sycamore for Trainer collectors.
Three products are listed: loose Booster Packs, the 36-pack Booster Box and the 8-pack Elite Trainer Box. The ETB's collector pricing spreads across only eight packs, so it tends to model as the worst of the three per pack. The live table below pairs each sealed price with a fee-adjusted EV from community-estimated rates and current singles prices, refreshed every couple of hours.
Sealed products: price vs. expected value
| Product | Margin after ~15% fees | Market price | EV of pulls | Odds it pays for itself |
|---|---|---|---|---|
| Booster Pack | −88% | $32.85 | $4.73 | 1% |
| Booster Box (36 packs) | −90% | $1459.59 | $170.34 | 0% |
| Elite Trainer Box | −98% | $1800.00 | $37.85 | 0% |
Pull-rate model
Steam Siege packs hold 10 cards; the slots below are the ones that carry value.
| Slot | Outcome | Est. chance |
|---|---|---|
| Reverse Holo | Reverse Holo | 100% |
| Rare slot | Rare | 57% |
| Rare slot | Rare Holo | 19% |
| Rare slot | BREAK | 7.5% |
| Rare slot | Pokémon-EX | 12% |
| Rare slot | Full Art (Ultra) | 3% |
| Rare slot | Secret Rare | 1.5% |
Community-estimated rates — no publisher discloses official pull odds. The calculator prices each outcome from live singles data.
FAQ
How many packs are in a Steam Siege booster box?
36 packs, each holding 10 cards with a reverse holo and one rare slot. The Steam Siege Elite Trainer Box holds 8 packs, as XY-era ETBs do, alongside its accessories, and loose packs are listed too.
What are the chase cards in Steam Siege?
The gold Secret Rare Gardevoir-EX is the clear top card, with the Secret Rare Volcanion-EX and full-art M Gardevoir-EX next. Full-art M Steelix-EX, Gardevoir-EX and Steelix-EX follow, and the full-art Professor Sycamore is the leading Trainer.
Is the Steam Siege Elite Trainer Box worth it?
For ripping, rarely. It holds 8 packs at a sealed price that reflects vintage collector demand for the box itself, so its per-pack cost usually models far above loose packs or the 36-pack box. Check the live table for the current gap.
What are the odds a Booster Pack of Steam Siege pays for itself?
About 1% after ~15% selling fees (2% before fees) as of 2026-10-27, computed from the exact outcome distribution of the Steam Siege pack model rather than a simulation. The median Booster Pack returns $1.49 of cards after fees against its $32.85 price, and the chance of at least doubling your money is 1%. These odds refresh with every two-hourly price update.
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