For me, no, but if it would work for you, go for it. The Biggest Loser Program has proved to me that money is not always the best reason to lose weight. Several of the winners from prior seasons have gain every pound, plus a few back because they went back to their old habits.

Ultimately, it is up to you to want to lose weight and keep it off because that is whats best for your health. If they are going to pay you some money for doing it, then that is just a bonus.