XY - Steam Siege
Booster Box no-chase EV calculator
Estimate the English Steam Siege Booster Box (TCGplayer product 120076): 36 packs and 360 modeled game-card positions. This independent browser sampler consumes generated local cards and exact Normal/Reverse Holofoil quotes. Market never substitutes Low or another finish. Online code inserts remain outside the game-card valuation.
Chase branches are excluded: holo rares, EX/GX/V/VMAX/VSTAR, secret rares, Shiny/Radiant/Trainer Gallery, illustration, hyper, ACE SPEC, and other premium rows do not contribute to this baseline.
Calculation order: ordinary pack contents are assigned to card rows first, then disabled pools and optional Sift filtering are applied afterward. Disabled rows do not backfill into other cards.
No-chase baseline
The official Steam Siege checklist verifies 31 Common, 30 Uncommon and 23 ordinary Rare identities with standard and parallel printings: 84 eligible identities and 168 Normal/Reverse outcomes. No numbered Energy appears in this checklist; Special Charge 105/114 is an Uncommon Trainer. The publisher checklist covers 1–114; generated Secret 115–116 membership is not independently certified by that checklist. This documented no-chase scenario excludes 9 Holo Rare, 14 Ultra Rare, 7 Rare BREAK and 2 generated Secret Rare identities before drawing, normalizing the retained 5 Common / 3 Uncommon / 1 ordinary Rare / 1 Reverse recipe. Uniform eligible identity allocations are assumptions, not factory odds. All 360 modeled game-card positions are drawn before Sift/pool filtering, without reroll or backfill.
Steam Siege online code inserts remain outside the original ten-game-card model. The own observed complete pack has no additional unnumbered Basic Energy; the excluded-Energy counter remains 0. This set has no numbered Energy; Special Charge 105/114 is an Uncommon Trainer, not Energy. The observed rare-slot Holo Rare Infernape 20 illustrates a documented excluded outcome, normalized out of this ordinary-only scenario before drawing. No promo, topper or loose-pack public product is added.
Loaded pools: waiting for card data.
Included pools ▶
Release-specific model analysis
What drives XY - Steam Siege Booster Box
Product profile. This booster box resolves 360 card positions across 168 named outcomes. The model snapshot dated June 10, 2026 contains 62 Common, 60 Uncommon, 46 Rare. Its largest slot groups are 84 reverse standard, 31 nf common, 30 nf uncommon, 23 rare slot rare. Every listed outcome contributes to the published baseline unless the visitor applies a post-draw filter.
Largest modeled weights. Aipom #90/114 (5.81 expected per booster box), Bergmite #36/114 (5.81 expected per booster box), Chimchar #18/114 (5.81 expected per booster box), Clauncher #33/114 (5.81 expected per booster box), Croagunk #58/114 (5.81 expected per booster box). These are frequency leaders in the product model, not a promise that any individual opening will contain them.
Release-specific card examples. Aipom (Reverse Holofoil) #90/114, Ambipom #91/114, Amoonguss #13/114, Deino #84/114, Tangela (Reverse Holofoil) #1/114, Tangela #1/114, Tangrowth (Reverse Holofoil) #2/114, Tangrowth #2/114. Seeing the named pool makes it possible to compare this release with adjacent sets instead of treating every sealed product as the same generic pack calculation.
Reference snapshot value concentration. At the TCGplayer Market snapshot dated August 12, 2026, 168 modeled outcomes have a usable direct or documented fallback price. The largest deterministic contributions come from Azumarill #77/114 ($6.70), Azumarill (Reverse Holofoil) #77/114 ($5.25), Foongus #12/114 ($2.50), Meowth #88/114 ($1.92), Larvesta #14/114 ($1.63). Together those five rows account for 17.3% of the modeled gross value. This dated reference does not update with the live calculator's prices or Sift settings.
The baseline product model is constructed first, including any documented chase exclusions. The calculator then draws the complete baseline product. Included-pool controls and optional Sift evaluate that completed draw afterward and do not alter its collation.
Selling Fees
Value Threshold
EV Range (Monte Carlo)
Purchase EV
Whole boxes only (0–1,000); fractional and out-of-range input is normalized before calculating.
Pack & Product EV
| Metric | Low | Mid | High |
|---|---|---|---|
| Pack EV (gross) | $0.00 | $0.00 | $0.00 |
| Product EV x 36 packs (gross) | $0.00 | $0.00 | $0.00 |
| Gross EV per product | $0.00 | $0.00 | $0.00 |
| Total fees per product | $0.00 | $0.00 | $0.00 |
| Net after fees per product | $0.00 | $0.00 | $0.00 |
| Profit after fees per product | $0.00 | $0.00 | $0.00 |
| Break-even price/product (mid) | $0.00 | ||
Purchase EV & Profit
| All products | Low | Mid | High |
|---|---|---|---|
| Gross EV | $0.00 | $0.00 | $0.00 |
| Total fees | $0.00 | $0.00 | $0.00 |
| Net after fees | $0.00 | $0.00 | $0.00 |
| Profit after expenses | $0.00 | $0.00 | $0.00 |
| ROI vs cost | - | - | - |
Sealed Price / EV
Advertising disclosure: The Expected Value may earn commissions from qualifying purchases made through affiliate links. Programs used by the site include TCGplayer, Mana Pool, the eBay Partner Network, and Amazon Associates. As an Amazon Associate, The Expected Value earns from qualifying purchases.
| Source | Product price | Break-even price/product (mid) | P/E | Basis |
|---|---|---|---|---|
| TCGplayer | - | - | - | Loading... |
Simulation Results (after Sift)
| Name | Card # | Rarity | Treatment | Value | Seller fees | Expected / product | Gross EV | Net EV | Products / copy |
|---|---|---|---|---|---|---|---|---|---|
| Loading generated card data... | |||||||||
| Deterministic total - active pools & Sift | 0.00 | $0.00 | $0.00 | - | |||||
| Sanity total - all modeled ordinary rows | 0.00 | - | - | - | |||||