Honestly, I think a lot of what you are paying for with the boot camp is the promise that their network and industry contacts will help you. Otherwise it's pretty much impossible (at least in my view) to justify those tuition rates.
Having gone through a bootcamp, I can also say there's the "we know what we're getting," factor. The job I got hired into afterwards, they knew I would be competent to a certain degree because they'd already hired out of that bootcamp before, and the bootcamp had pretty strict standards about who made it to Career Day. That was a definite factor in my getting hired.
Not to say this would or wouldn't justify various tuition rates - but it's definitely part of the equation.
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.
Oh yeah watch out for bootcamps that juice their placement stats by hiring their own grads a lot. It's normal to hire a few grads for teaching assistants but if you see more than that be weary.
I would say a good 10-20% do have some kind of contact in the industry though and get a job that way.