Expected Value by Product

ProductPriceMean EVMedian EVROI Std DevP5P25P75P95P99Simulated
Pack $11.99 $9.72 $2.04 -19.0% $67.15 $1.2 $1.48 $11.06 $27.62 $88.44 1,008,000
Box $298.24 $235.45 $194.34 -21.1% $326.68 $128.97 $161.08 $240.51 $324.23 $1172 42,000
Case $3590.76 $2825.34 $2482.47 -21.3% $1143.21 $2148.46 $2328.44 $2716.8 $5391.15 $7997.48 3,500

Mean EV is skewed upward by ultra-rare chase cards; the median tells you what a typical rip returns. Percentiles show the spread: P5 is a bad rip, P95 is a great one.

Hit Odds (per Booster Box)

RarityExpected / PackExpected / BoxExpected / CaseP(≥1 per box)
L 0.3333 8.00 95.98 100.0%
Manga Rare 0.0004 0.01 0.13 1.0%
SR 0.4999 12.00 143.97 100.0%
SEC 0.1333 3.20 38.39 100.0%
Alt-Art Leader 0.0041 0.10 1.18 9.9%
Alt-Art Rare 0.1199 2.88 34.54 100.0%
Alt-Art Super Rare 0.0598 1.44 17.22 100.0%
Alt-Art Secret 0.0200 0.48 5.76 48.0%
Gold DON!! 0.0069 0.16 1.97 16.4%

Active Pull-Rate Model

RarityFinishRate / PackOddsSources
SR any 0.5000 1 : 2 packs EB-03 Heroines Edition JP-release community rates, per-pack converted (onepieceboosters review)
L any 0.3333 1 : 3 packs EB-03 Heroines Edition JP-release community rates, per-pack converted (onepieceboosters review)
SEC any 0.1333 1 : 8 packs EB-03 Heroines Edition JP-release community rates, per-pack converted (onepieceboosters review)
Alt-Art Rare any 0.1200 1 : 8 packs EB-03 Heroines Edition JP-release community rates, per-pack converted (onepieceboosters review)
Alt-Art Super Rare any 0.0600 1 : 17 packs EB-03 Heroines Edition JP-release community rates, per-pack converted (onepieceboosters review)
Alt-Art Secret any 0.0200 1 : 50 packs EB-03 Heroines Edition JP-release community rates, per-pack converted (onepieceboosters review)
Gold DON!! any 0.0069 1 : 144 packs EB-03 God Pack + chase rates (Samurai Sword guide, EN 24-pack boxes)
Alt-Art Leader any 0.0042 1 : 240 packs EB-03 God Pack + chase rates (Samurai Sword guide, EN 24-pack boxes)
Manga Rare any 0.0004 1 : 2400 packs EB-03 God Pack + chase rates (Samurai Sword guide, EN 24-pack boxes)
GOD_PACK any 0.0002 1 : 4320 packs EB-03 God Pack + chase rates (Samurai Sword guide, EN 24-pack boxes)

Validation Report

Latest run: PASSED • 30 metrics checked against research data • 0 outside tolerance • 10,000 boxes, 1,000 cases, 100,008 packs

MetricObservedSimulatedDeltaToleranceResult
AA_R (any) per pack 0.12 0.11969 -0.26% ±75% PASS
AA_SEC (any) per pack 0.02 0.020298 +1.49% ±75% PASS
AA_SR (any) per pack 0.06 0.060185 +0.31% ±75% PASS
L (any) per pack 0.333333 0.333243 -0.03% ±75% PASS
SEC (any) per pack 0.133333 0.133559 +0.17% ±75% PASS
SR (any) per pack 0.5 0.50028 +0.06% ±75% PASS
AA_L (any) per pack 0.004167 0.00381 -8.57% ±90% PASS
DON_GOLD (any) per pack 0.006944 0.007029 +1.22% ±90% PASS
GOD_PACK (any) per pack 0.000231 0.00034 +46.87% ±90% PASS
MR (any) per pack 0.000417 0.00038 -8.81% ±90% PASS

Research Sources

SourceTypeSampleConfidenceData Points
Bandai Extra Booster structure (EN: 12-card packs, 24-pack boxes, no leader cadence) — Bandai official 100% 0
EB-03 Heroines Edition JP-release community rates, per-pack converted (onepieceboosters review) — onepieceboosters.com / JP community data community aggregate 50% 6
EB-03 God Pack + chase rates (Samurai Sword guide, EN 24-pack boxes) — samuraiswordtokyo estimate 40% 4

Pull rates are never hardcoded: every observation is stored with its source and confidence, merged into a weighted model, then verified by simulating 100,000+ packs and comparing the results back against the research data.

Simulate a Box View Set List