If you look at long term value, the tuition is really nothing. At a good bootcamp even without any industry contacts you will probably have a job in 6 months. Sure your salary will be lower than a CS grad, but you'll also have way less debt.
But yes look at placement rates at any bootcamp before joining. If people are getting jobs then it's well worth it.
Right, I suppose what I mean to say is, if you were "just" learning how to program, it probably wouldn't be worth it, because you could learn just as well on your own for practically nothing (order some books on Abebooks and watch some videos on Coursera and you've got a decent curriculum). But if you do that you haven't made any contacts and don't have anyone to vouch for your skills.
A good analogy is a bootcamp is like a personal trainer. Sure you could do jumping jacks yourself but when someone yells at you to get them done, you do it more often and faster. Some people need that extra push through.
But yes some people have plenty of self motivation and can do it themselves. The career networking is really all they need then.
But yes look at placement rates at any bootcamp before joining. If people are getting jobs then it's well worth it.