Korean DnF is having a event where u can buy 2 set of avatars (normal and high ones) with ingame gold, instead of Cera(cash coin). this is for ALL classes, Normal Avatar prices are from the range of 11k to 22k, high ones are from 20-something-k to 50k.
check here to see what avatar options are...
http://www.onrpg.com/boards/489-202/#post489335 <- (some are wrong, coz im not sure what it does, but w/e. lol...)