500 Years in the Future Booster Box EV Calculator

Best Evidence — Japanese collation proxy

Evidence

This calculator is based on Best Evidence — Japanese collation proxy reviewed September 4, 2026.

Sources

• 500 Years in the Future [OP-07] official English product page - Bandai Co., Ltd. (accessed 2026-09-03)
• TCGCSV category 68 group 23387, sealed product 532106 - TCGCSV (accessed 2026-09-03) — identity and pricing were imported into local generated artifacts; the calculator does not call the raw endpoint.
• Best Evidence — Japanese collation proxy and ordinary-pool classification - The Expected Value (accessed 2026-09-04)
• Japanese OP-07 product contents - Bandai Co., Ltd. (accessed 2026-09-04)
• Japanese OP-07 single-box counted opening - Otakahero (accessed 2026-09-04)
• English OP-07 high-rarity and two-DON!! box observations - Reddit community observation (accessed 2026-09-04)

Limitations

• collation.cardsPerPack and collation.packsPerProduct: the product uses 12 cards per pack and 24 packs per English booster box; those physical wrapper counts do not establish rarity-slot probabilities.
• collation.caseStructure: box-level hit counts and display/case correlations are unresolved for the exact English North America printing.
• evidence.sample: null because no reviewed observation provides a complete, attributable sample with exact unit, size, method, North America printing, and observation interval.
• pricing.coverage: exact TCGCSV identity is known, but modeled row and expected-mass coverage have not been measured.
• Modeling policy approved 2026-09-04: every supported ordinary card in the same slot, rarity, treatment, and finish pool receives one equal positive selection weight. This is a transparent modeling assumption where the publisher or empirical sample gives pool odds but not card-level sheet weights.
• Best Evidence — Japanese collation proxy: exact English wrapper and card-price identities are combined with an owner-approved Japanese-product collation proxy because a complete English rate ledger is not published. This is an estimate, not a factory guarantee.
• Only booster-pack slot counts and rarity probabilities are proxied. Card identities, treatments, TCGplayer Low prices, sealed-product identity, language, region, release date, and any explicitly modeled fixed bonus come from the exact English release.
• The proxy is first-order and product-family-specific. No display or case correlation is inherited, and no target is used as a donor for another target.
• Within each retained English rarity/treatment pool, exact positively priced card SKUs use equal positive weight where publisher sheet weights are unavailable.
• Per 24-pack English OP-07 box proxy: 166 Common, 64 Uncommon, 39 Rare, 8 Leader, 7 Super Rare, 2 retained Secret Rare, and 2 parallel DON!! cards total exactly 288 physical cards. The seven-Super-Rare and two-DON marginals are corroborated by English box reports; unsupported premium-hit positions are conditioned onto the two regular Secret Rares. Exact low-rarity DON replacement and pack sequencing remain assumptions, not factory guarantees.
• Replace this proxy when a complete, attributable English collation ledger or publisher rate table becomes available for the exact release.
• Bandai's exact English OP-07 roster advertises 126 game-card types plus one DON!! type: 119 ordinary L/C/UC/R/SR/SEC identities, six Special cards, one Treasure Rare, and one DON!! card. All 119 ordinary identities remain eligible. The six Special cards, Treasure Rare, manga, and every other unsupported parallel or alternate-art game card are removed before drawing.
• Bandai's Japanese OP-07 product has six-card packs. A reviewed single Japanese box opening covers 24 packs and counts 85 Common, 30 Uncommon, 19 Rare, 4 Leader, 4 Super Rare, and 1 Secret Rare, totaling 143 of the 144 advertised physical cards. Treating the remaining position as the product's separately catalogued DON!! type is an inference, not a source-labelled pack map. This one-box observation is evidence for the product-specific family structure, not an exact production rate table.
• English OP-07 community observations corroborate seven regular Super Rares, two or three premium hits, and two DON!! cards per 24-pack box. The no-chase model uses eight Leaders, seven Super Rares, and two retained high-hit positions; excluded alternate-art, Special, Treasure Rare, and manga outcomes are removed and the supported high-hit positions are conditioned onto the two regular-art Secret Rares.
• The two retained DON!! cards use exact English TCGplayer product 555894 and its Foil Low price. Products 557078 and 557080 belong only to Double Pack Set Volume 4, and product 557077 is the separate DP-04 Special DON!! Card Pack; none of those Double Pack identities enters the booster-box or embedded pack EV.
• The English wrapper is 24 packs of 12 cards, or 288 physical cards. No reviewed source proves that DON!! packs contain a thirteenth card or identifies the exact replaced low-rarity position, so the model replaces two Common positions with the two DON!! cards as an explicit marginal assumption. The displayed box remains 288 cards, and embedded pack EV includes the average 2/24 DON!! contribution.
• OP-07 has no fixed Box Topper, Revision Pack, purchase-campaign card, Double Pack bonus, or other box-only card in the booster-box identity. Ordinary and retained special pools use equal positive SKU weights where sheet weights are unavailable; no within-box duplicate rules, pack assignments, or case covariance are claimed.
• No-chase redraw policy approved 2026-09-04: Curio, Enchanted, alternate-art, parallel, showcase, serialized, signature, premium-rarity, promotional, and any other card or treatment without a supported pull rate are excluded. A chase hit is redrawn from the applicable supported ordinary pool, so excluded cards occupy no modeled outcome.
• Simulation ordering is draw the complete disclosed no-chase product first, record that draw, and only then apply Sift or another user filter. Sift never changes or backfills the completed modeled draw.