there isnt a single training company out there that isnt trying to make money, so dont get too bent out of shape about that.
you should ALWAYS treat bootcamps as a final review before you go take an exam and not the "teaching" portion, you should be ready to take the test in your mind before you go to a bootcamp. if you want to learn it, you need to find a trainer who takes their time and teaches it over the course of weeks or a semester, that has homework and tests; that sort of thing.
you should be leary of any body/thing/trainingshop/cert that sells that you can learn what you need to know in 5 days with no prior information or with no way to study beforehand. will you pass the cert test, probably...will you REALLY know the information, maybe to doubtful.
hope that helps