Booster box EV · EUR · 2013
XY Black Star Promos booster box — is it worth opening?
A sealed XY Black Star Promos box yields an estimated €7.45 in singles (EUR, Cardmarket reference prices) — about €0.21 per pack across 36 packs. Most modern English booster boxes retail around €100–€160; compare against the exact price you'd pay below.
Per-rarity breakdown · XY Black Star Promos
216 of 216 cards priced. Avg = mean Cardmarket trend price for that rarity in the set.
| Rarity | Cards | Avg € | Top € | ~ / box | EV contrib. |
|---|---|---|---|---|---|
| Promo | 216 | €22.25 | €281.43 | — | — |
How this XY Black Star Promos EV is estimated
Estimated value of the singles in a 36-pack booster box, computed as the sum over each pack slot of (pull-rate × average Cardmarket trend price for that rarity in this set). Pull rates are a disclosed community-aggregated model (SV/Mega community aggregate, 2026-06 (rev2)) — Pokémon does not publish official odds, so this is an estimate of the average outcome, not a prediction for any single box. Reference prices are Cardmarket EUR trend values via pokemontcg.io. Informational only — not financial advice.
Box EV for other sets
Reference prices: Cardmarket (EUR) via pokemontcg.io, refreshed daily and cached here. Pull rates are a disclosed community-aggregated model (SV/Mega community aggregate, 2026-06 (rev2)). Estimates for planning only — not financial advice. Foilio is an unofficial fan project, not affiliated with The Pokémon Company.