When a user trades any crypto to crypto on the exchange there is a 0.15% Maker or Taker Fee.
When the trading fee is paid using GMC, there is a 33% discount and the trading fee is only 0.10% for both the Maker and Take Fee (paid in GMC).
This feature can be turned on or off under the account "Settings" and "Fees" selecting trading fees to be paid in either GokuMarket Credit (GMC) or the Market Currency.
For any further queries regarding trading fees, please visit the link given below:
[Latest update 2020-07-02]