There are 4 different types of Trade Shops: Barrel Shop, Stamp Shop, Honor Shop and at times Event Shop.
Each has its own unique currency that can be gathered at different places.
- Barrel Shop uses Barrels as currency, you can get them by completing Voyages
- Stamp Shop uses Daily Stamps as currency, you can get them by completing Daily Tasks and the Boss Challenge.
- Honor Shop uses Honor Points as currency, you can get those from the Arena
- Event Shop, usually related to a Quest Event or a general Event, contains Event items and Event currency. One example is the Piece of Cake event, which allowed you to exchange Cakes for valuable rewards. This shop is not present at all the time.