I started working out on wii fit the last week of last April at 310 pounds. I could BARELY get through 10 minutes of Free Step (on wii fit) but I kept at it till I was doing it for 3 hrs a day 5-6 days a week. Eventually I started doing Free Run on there and just last month I moved on to using a treadmill instead. I call wii fit my gateway drug to "actual" exercise. LOL I've also done Zumba a few times...was fun and HARD, but not my thing. I'm very uncoordinated.
It was well worth the money to me, fwiw.
Good luck, whatever you end up doing!