Exalted Orbs are extremely rare currency items that can be dropped by slain monsters, chests, and containers the drop level of is 35. If you don't play high-level maps getting Exalted Orbs can take up to 50hours ingame time and it's simply easier to buy them. http://www.spettacolovivo.it/index.php?option=com_k2&view=itemlist&task=user&id=1383660