Kucoin has their own shares like all other exchanges that can be used for the comissions with the discount. The more you keep your kucoins the more rewards you will receive from the trades made accross the exchange. It used to be all different coins but since they were more of a dust, not much benefit was there but Kucoin changed it and now they pay all rewards in Kucoin shares. You need to go in the app to accept it though. App also has the daily check in gives candy points. Margin, and leveraSee full review