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500 Years in the Future

One Piece
$327
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7-day
+0.1%
30-day
-4.2%
90-day
-5.2%
90d range
$284–$350
eBay supply
111
Supply Δ
+3.7%
Set value
$3,694
Set ÷ box
11.3×
vs retail
2.7×
hold
0/10

This box trades at $327, 7% below its 1-year high of $350. It's been sliding: down 5.2% over 90 days and still soft. It sits mid-range for the period tracked. It typically swings about ±1.8% in a month. Worst tracked stretch: a 7% drawdown from peak; it sits 7% below that peak now.

eBay supply is growing: active listings are up 4% over the last 60 days — more sellers than buyers for now. The set's cards are worth about $3,694 — 11.3× the box price, vs a typical 18.6× for One Piece. That thin multiple trims 1 point off the score. Across One Piece boxes the median 30-day move is -1.8% (29% of boxes up), and this one is running 2.3 points behind that pace.

No supply contraction and no price momentum — nothing actionable right now. Two ways it earns a Buy rating: a 60-day supply drop past 10% while the price holds, or a value setup — a price near the bottom of its range that stabilizes while the set's card value stays rich vs the box.

Context & evidence · trades at 2.7× the ~$120 standard retail price of a One Piece box of its era · data confidence A: 123 price reads over 198 days · 30 supply reads · volatility measured. Grades improve automatically as history accrues — we publish the evidence depth, not just the verdict.

Price history

Market price, USD · shaded cone = 60-day trend projection (-2.4%/30d trend, band = this box’s own volatility)
$350$284Mar 2026Dec 2026

eBay supply

Active listings over time
12160Jun 2026Oct 2026
Top cards in this set
Top 8 of 21 cards tracked in this set, ranked by market value. Tap any card for its own price history and rating — what the sealed product is worth ripping for is the same question these cards answer.
hold
Boa Hancock (051) (Parallel) (Manga)
$2,150.33▲ +0.8%
watch
O-Nami (SP)
$459.58▼ -1.2%
watch
Boa Hancock (038) (Parallel)
$102.90▼ -3.5%
watch
Trafalgar Law (010) (TR)
$99.91▼ -1.3%
watch
Donquixote Doflamingo (SP)
$79.84▼ -7.1%
watch
Eustass"Captain"Kid (SP)
$66.03▼ -4.2%
watch
Izo (SP)
$43.40▲ +2.2%
strong buy
Okiku (SP)
$43.18▲ +0.4%
Hover (or tap) anywhere on a chart to read the value on that date. The cone is a trend projection, not a prediction: it extends the last 90 days’ trajectory and widens with this box’s typical swing — roughly 2 of 3 outcomes should land inside it, and every projection is logged so we can publish how often that actually holds. Supply readings are eBay active-listing counts (approximate and jittery). Informational only — not financial advice. Reload to refresh.