WFL means Win / Fair / Lose. This page explains how to tell whether a Grand Piece Online trade is a win, fair, or a lose, and gives you a free calculator that does the math for you.
Open the WFL trade calculator →In GPO trading, "WFL" is shorthand for the three outcomes of any trade, judged by total value:
You receive more total value than you give up. You came out ahead.
Both sides are roughly even, within about 10% of each other. Nobody is being ripped off.
You give up more total value than you receive. You lost value on the trade.
The gpovalues.com trade calculator is the actual WFL tool. Add items to each side and it sums the values and shows the verdict instantly, so you do not have to do the arithmetic by hand.
These use live values from gpovalues.com as of 2026-07-27, derived from 30,467 observed Discord trades. The verdict for each is computed from the real numbers, nothing is hand-picked. Values shown in parentheses are per-item.
A classic "is my Dark Blade worth a Pika + a Mythical Fruit Chest?" check.
Difference: -10.6% in your favour. You give up more value than you receive, so this is a lose. Reconsider or ask for more.
Stacking a couple of mid items against a single high-value chest.
Difference: +257.7% in your favour. You receive more value than you give up, so this is a win for you.
Trading a stack of one item for a single higher-tier blade.
Difference: -15.5% in your favour. You give up more value than you receive, so this is a lose. Reconsider or ask for more.
Values move as new trades come in, so always re-check in the calculator before you accept a trade.