This game was a huge disappointment. I guess if you really need a wii game it might be worth 10 dollars but I personally don't think so. The main problem isn't the money here; I don't believe this game is worth the time it takes to play it.
For the record, I'm a huge fan of the metroid series; I've played super metroid, metroid II, metroid zero mission, metroid fusion, and every prime game to completion.