I love the game. I think it's a charming fairy tale-ish adventure game. It's a good game to explore. I got the dlc and I think it's a nice addition. The dlc is mostly the same stuff, but with a little extra story, more high level monsters and achievements, and a few exclusive character features like hair.
However, if you get the game, play through the main story line first before buying the dlc. If you enjoyed the game and want more then totally buy it! If you're only just satisfied or if your bored with the game at the end of the story line then don't get the dlc. That's how I decided if I wanted the dlc.