Guides & Research

One Piece booster box & card price guides

Research notes on Japanese One Piece sealed-box prices, PSA 10 card sales, grading population and the limits of each market signal. Every report states its data window and source type.

• Data Report · Jul 17OP-16 Box Price, One Month After LaunchPre-order $220 → launch $139 → low $123 → now $150. The full tracked path, the three Manga Rare admirals, and the grading ramp — real data, no hype.
• Data Report · Jul 2026Japanese vs English Box Prices: What 6 Months of Data ShowsEvery box in both languages, tracked weekly since January. The English premium runs 1.3x-7.4x and follows a pattern — with the full per-set table.
• Data Report · Jul 2026PSA Grading and One Piece Sealed SupplyNearly 100,000 grades added in six weeks, with volume by set and the limits of using submissions as an opening signal.
• Regional · SEAOne Piece Box Prices in the Philippines, Singapore, Malaysia, Indonesia & ThailandBox prices in PHP, SGD, MYR, IDR and THB, the Asia English edition explained, and where SEA collectors actually buy.
• ReferenceOne Piece Set List & Release Dates (2022-2026, incl. OP-17)Every OP, EB and PRB set in order with Japanese and English release dates, current box prices, and official OP-17 details.
• BasicsHow Many Packs in a One Piece Booster Box?24 packs per box, 6 cards per Japanese pack, official MSRPs — and the box math that explains why market prices leave retail behind.
• Card PricesOne Piece Card Price Guide: NM, PSA 10 and Sold PricesHow to match the exact card variant, use completed PSA 10 sales, read NM references and avoid thin-sample price mistakes.
• Comparison GuideHow to Compare One Piece Booster Boxes With Market DataUse completed sales, active listings, chase-card concentration, grading data and seal risk without turning one metric into a verdict.
• MethodologyHow OP Box Index Reads One Piece Market SignalsHow OP Box Index interprets One Piece booster box prices, eBay active listings, sold comps, PSA 10 data and chase-card strength.
• Market CompareJapanese vs English One Piece Booster BoxesHow Japanese and English One Piece booster boxes differ for sealed collectors: entry price, liquidity, collector demand and resale market depth.
• Buying GuideOne Piece Booster Box Price GuideHow to read One Piece booster box prices using sold comps, active listings, chase-card strength, language version, supply risk and seller quality.
• Set CompareOP-05 vs OP-06 One Piece Booster Box: Which Is the Better Sealed Pick?Comparing OP-05 Awakening of the New Era and OP-06 Wings of the Captain Japanese sealed booster boxes: release timing, chase cards, PSA 10 signals and how to judge which is the stronger pick today.
• Card PricesPSA 10 vs NM One Piece Card PricesWhy PSA 10 One Piece card prices differ from NM raw card prices, and how graded-card liquidity affects booster box research.
• Research NoteHow to Read PSA Population Alongside One Piece Card PricesHow to compare population, gem rate and completed sales without treating submission data as direct proof of price or print quality.
• ChecklistSealed Booster Box Reseal ChecklistA practical checklist for reviewing One Piece sealed booster boxes before buying: photos, wrap, edges, seller history, price and return policy.
• Research Note7 Signals That Move One Piece Booster Box PricesThe main factors behind Japanese One Piece sealed booster box price movement: supply, reprints, chase cards, PSA demand, liquidity and marketplace risk.