I'm in the process of getting laser for my facial hair. I briefly mentioned women getting full body stuff done to see what she'd say (my guy reason for the removal was good enough that I didn't need to give her the real reason) and she said she had it done on herself. She tried to do full body sessions, but after an hour, with numbing cream, she couldn't take it anymore. I know she told me 6 sessions on the facial hair, so I'd imagine it's the same for the body too. After that it's just an occasional treatment for stragglers. My total cost if it really does only take 6 instead of the 20 people keep telling me, is $2000. Keep in mind that's for a total of about 1.5 hours of treatment. For full body, I agree with the first poster on the $10k+ price.
If you're not too terribly hairy on the rest of your body, I'd recommend giving the Tria a shot for those parts. It's time consuming, but it does seem to be working and it's only $500 to buy one. I've had hairs coming out just by grabbing them with my fingers after using it and I started using it about a month or two ago.