Nutri-System?

Has anyone ever tried the Nutri System? I've been thinking about it but I'm kind of nervous because its $300 and that's a lot of money to spend up front. It breaks down to about 10 bucks a day which isnt too bad because its breakfast, lunch, and dinner. I would like to lose about 25 pounds so I'm not sure if that is worth it or if there something else out there that is cheaper. It's so hard for me to stick to a healthy diet. it doesnt help that my boyfriend can eat and eat and eat and not gain a pound!