The economy of Eternal Realms places control in the hands of players through custom-built, secure mechanisms for trading and currencies. To learn more, view their mechanisms in this category.
Eternal Realms uses only one currency: Ether.
Player shops are the best way to buy and sell items. Every player can make their own shop by placing some shop signs in their outpost so that anyone can buy their items or sell items to them.
Check out the Player Shops wiki to learn how to get started.