There is a special currency in the world of Karos - carats. The amount of carats you have is shown in the bottom right corner of your inventory.
How to earn carats:
- Completing quests.
- Looting from dead monsters.
- Selling items to NPC and trading with other players.
- Collecting fee as a castle/mine owner.
How to spend carats:
- Buying items from NPC and trading with other players.
- Sending messages via Mailbox.
- Depositing items in the Storage, expanding Storage.
- Advancing classes.
- Crafting.
- Teleporting via NPC.
- 'Shouting' in chat. (50 carats for each message)
Unique currency for cash store:
Despite carats, every localization of Karos Online has another currency which can be obtained for real money. Using this currency, you can buy unique items in the cash store.