Economy

Game Economy

The currency used by game is Gold.
Gold can buy you only basic gear and consumable items from NPC shops. It is also used to pay for various services like teleport from City Hall and various upgrades for your character or guild cost gold as well as other things.
Gold is fairly easy to obtain by selling items to NPCs.

Players use the Cash Shop currency called Olympia Coin to trade with each other. Sometimes players also accept high level enchanting shards/fragments or Xelima/Merien stones and even rarely they will trade for specific item.
Prices for items follow rules of supply and demand. Look through trade channel on Olympia Discord to get an idea of current prices.
You can obtain Olympia Coins for real money or you can obtain them from players in exchange for items. You can also trade things like contribution points by temporarily joining a guild and donating them.

First you need to find a player to trade with. You can do that using trade channel on Olympia Discord or in game using the global/town chat.
To do the actual trade you need to meet with the other player, drag the item from your inventory on top of the player's character and click the Trade option.
That opens a trade window where you can add/remove items on the left and you can see what the other player is offering you on the right. Once you are happy with the exchange, confirm it. After the other player confirms it too the shown items will be moved to your inventory and your offered items will be moved to the other player.