Free (getting some of the higher-end stuff requires cash items, which are easily obtainable through the Market Manager), eye-candy (oogle at the maps and characters bodies 8D), and fun (woo~ clan chats).
It's cool unless you're looking for the kind of "cutesy anime" games. This is intense, hardcore, baroque-period style era. No cute little drops of goo hopping around. No little mushrooms with ":3" faces tackling you. No "F3" faces to make at other people (although there are some neat little poses you can do).
This is hard. core. baroque.
*plays lute* ~