I think most people who would be considering bootcamps are comparing it to a traditional 4-year college curriculum -- at least I did. I enrolled in the full-time web program a few years back and this was the back-of-the-napkin math I used to make my decision:
Total Hours of College:
4 years, of which 2 years are "core" coursework and 2 years are general education.
2 Years * 2 semesters per year * 15 weeks per semester * 15 credit hours per week = 900 hours for a degree.
Lambda School:
6 months * 4 weeks per month * 40 hours per week = 960.
Obviously this doesn't account for a number of variables such as 0-credit "mandatory" labs, out-of-class work/projects/studying, but a Lambda student who spends an extra 5-10 hours per week during the program would end up with 1000-1200 total hours.
But this still ignores the main advantage of a program like Lambda, which is the ISA. An education that would be inaccessible to students at the margin -- think people who can't afford to move to a university, qualify for loans, or take 2+ years off of work -- can get in if they're committed enough. Even if Lambda were a total scam, at worst you're out 6 months and $0. If Local State University doesn't get you a job, you're out 4 years and $50k+.