Forecast

ST-31 · One Piece Card Game

ST-31: Starter Deck 31 RED Monkey.D.Luffy

10 cards, led by Thousand Sunny at $8.55.

Released Jul 31, 2026

Set index · ST-31

59.57

−11.30 (−15.95%)1Y

1W
−1.52%
1M
−12.35%
1Y
−15.95%
52W low 56.35high 70.87
Thousand Sunny
Sanji
Monkey.D.Luffy (ST21-001)
Monkey.D.Luffy (ST31-004)
Nami

The 5 most valuable · $0.98 – $8.55

Cards
10
Priced printings
10
Sales a week
17
Typical single, Near Mint
$0.92
Popularity
41/100
Standing
#55

The index

A score that started near 100. It rises when its Near Mint English cards sell for more than they did.

6080100AugSepOct

Sealed

Every way ST-31: Starter Deck 31 RED Monkey.D.Luffy was sold, priced.

2 products

* Standard MSRP for that product type, or a bundle's count × that price.

Cards

10 of 10 valued in Near Mint

In the set

10 singles tracked

  1. R3 · 30%
  2. C3 · 30%
  3. SR2 · 20%
  4. L1 · 10%
  5. PR1 · 10%

How to read the set index

What is the typical single?
The median fair value of the set's Near Mint English singles — the price in the middle, so one chase card can't drag it up. Fair value comes from real sales only; the marketplace's Market Price is shown on card pages but never counted.
What does the index line show?
Each week the set's cards are compared with the week before and the typical change is added to a line that starts near 100. Above 100 the set's cards sell for more than they did a year ago; the 90-day figure is that same line, read over the last quarter.
How is popularity scored?
Out of 100, against the rest of the game: how much the set's cards sell for, how many of them sell each week, how many cards it holds and how its index has moved. It ranks sets; it isn't a price.