Americans with a J.D.
Americans with an unapproved JD is more accurate. Again, going to those schools, you need to know the risks. They close a lot of doors, because frankly, there are a lot of scam schools out there that just want your money.
How is it an unapproved JD? If it is an unaccredited schools then yes. But remember, all accrediting bodies are voluntary. From the regional to the national to the specific professional. A law school can be accredited by a regional body but still be non-ABA. I have seen J.D.'s accredited by a regional body and thus eligible for federal financial aid, but not by the ABA. The JD is thus just as valid as a Ph.D. from the same university. Now, to practice law is a different issue. What about law schools that are not members of the AALS? Or what about those not members of the Order of the Coif? Many view these schools as losers with limited opportunities.
I do agree with needing to evaluate the whole situation. Depending on what type of school you attend--unaccredited, state-accredited, ABA-accredited, etc.--you will have different options. But as long as you attend a school whose J.D./LL.B. will allow you to practice law where you want, then by all means go for it. As for cost, I have looked at some of these schools and most of the state-accredited schools are just several thousand dollars per year.
Personally, unless you have a decent job and only want to practice law on the side or test it out, then I say stay away from most limited schools. Attend only an ABA-school that will let you have portability. However, I know judges, lawyers, and politicians (federal and state) who have attended non-ABA schools.