One Piece Box EV Calculator
What are a booster box's pulls actually worth? Real market prices, your odds assumptions.
What is box EV?
Box EV (expected value) is what the cards you pull from a booster box are worth on the singles market, on average. For most One Piece sets it sits below the box price — value concentrates in a few premium slots — which is why collectors chasing specific cards usually do better buying singles. This calculator computes EV from weekly-refreshed TCGplayer market prices and pull-odds assumptions you control.
Expected premium hits per box — editorial estimates, adjust to taste
Modeled singles value per box
$0
A model, not a promise: card prices are TCGplayer market data refreshed weekly, but Bandai publishes no pull rates — the odds above are yours. Sealed-box value and grading upside are out of scope.
Top 5 chase cards · 73% of the set's singles value
- Sakazuki OP16-065$1,205
- Kuzan OP16-063$1,194
- Borsalino OP16-073$1,057
- Ms. All Sunday OP14-084$657
- Portgas.D.Ace ST15-005$240
Methodology & limits
Card prices are TCGplayer market data refreshed weekly. Each rarity tier's average covers the priced cards in that tier for the selected set; the model multiplies your expected hits per box by those averages and sums the result.
Bandai publishes no pull rates, so the sliders ship with editorial estimates and every one is yours to override — the output is a model of singles value under your assumptions, not a promise. Out of scope: base-rarity bulk (near zero), sealed-box appreciation, grading upside, and pack-opening fun, which is real but unpriceable.
Box EV: quick answers
- Is opening One Piece booster boxes worth it?
- Usually not in pure singles value — value concentrates in a handful of premium pulls, so most boxes return less than they cost and the occasional box returns several times its price. This calculator quantifies that spread for each set under odds you set yourself. Open boxes for the experience; buy singles for the collection.
- What are the odds of pulling a manga rare?
- Bandai publishes no official pull rates. Community case-opening data generally puts manga rares at roughly one per 12-box case or rarer — which is why the calculator's default is a small fraction per box and lets you set your own number.
- Where do the card prices come from?
- TCGplayer market prices, refreshed weekly by the same data pipeline that powers our set card lists. Tier averages are computed over priced cards in each rarity tier.