$643

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Booster box · One Piece

Emperors in the New World

Nothing to do yet · 2/10

The Prof’s take

Emperors in the New World has been pretty steady lately, and the number for sale hasn't changed much. Nothing for me to do here right now.

— the Prof

What would change my mind

Listings shrinking 10% in two months while the price holds, or the price settling near its low while the cards inside stay valuableRight now about 70 are for sale on eBay, about the same as two months ago.

Open it or keep it sealed?

Open it. For the price, the cards inside are a better deal than usual for One Piece. The value is spread across lots of cards, so there are fewer big swings.

Set value$18,443

Box price$643

Show me the numbers

Price since we started tracking it

Market price, in dollars.

Forecast bands are Pro. Where I expect the price over the next two months, drawn right on this chart.

See the back room

Price today$643

1-year high$689

Last 90 daysDown 6.5%

Last 30 daysDown 3.7%

This weekDown 1.2%

eBay listings~66 live, about flat in 60 days

Set value$18,443, 28.7× the box (typical One Piece 18.6×)

Vs. retail5.4× the ~$120 original price

Data confidenceA

eBay listings over time

How many are for sale. Fewer usually means harder to find.

The long version

This box trades at $643, 7% below its 1-year high of $689. It's been sliding: down 6.5% over 90 days and still soft. It sits mid-range for the period tracked. It typically swings about ±1.2% in a month, calm by One Piece box standards, so moves that size are worth noticing. Worst tracked stretch: a 7% drawdown from peak; it sits 7% below that peak now.

eBay supply has held flat over the last 60 days. The set's cards are worth about $18,443, 28.7× the box price, vs a typical 18.6× for One Piece. That rich multiple adds +1 to the score. Across One Piece boxes the median 30-day move is -1.8% (29% of boxes up), and this one is running 1.9 points behind that pace.

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

What this is based on: 123 price reads over 198 days, 30 supply reads.