Cards EV Lab
Know what you're opening before you rip.
One Piece Card Game
OP-14: The Azure Sea's Seven
What is EV?
Expected Value
EV (Expected Value) is the average dollar amount of cards you can expect to pull from a sealed box, based on current market prices and known pull rates. If the EV is higher than the box price, the box is a "positive EV" product. If it's lower, you're statistically likely to lose money opening it.
Why it matters
Whether you're a store owner deciding what product to crack for singles, or a collector wondering if it's worth ripping a box instead of buying singles, EV gives you a data-driven answer. It doesn't guarantee results for any single box, but over many boxes, the math holds up.
How we calculate it
We use community-verified pull rates for each rarity tier and live market prices from TCGPlayer. The simulator runs a Monte Carlo-style random box opening using these rates, so each simulation gives you a realistic sample of what you might pull.