I did the one at UVA : 1 year for the basic science prerequisites + a seminar on the US Health Care System + lots of support along with the classes, some special sections for the Postbac Premeds, a prep course for MCAT’s paid for, counseling and help with applications, mock interviews --ie, all the support you can imagine. It’s quite tough as the courses are packed together which I’m sure works against some folks if they are unable to excell due to the time pressure. It’s also fairly pricey. It was worth it for me: I’m very glad I did it and thought it well worth it, especially as I simply could not get enrollment in the prereqs anywhere in Richmond, VA (where I was living at the time). Tried at 5 different colleges - always last to register due to not being an undergrad there, and could not get into Gen Chem anywhere. After 3 semesters of unsuccessful attempts, I applied to VCU and UVA’s programs, and decided to go to UVA’s.
The question is whether the value is worth the price. For me, it definately was.
Kate