I have the AFT correspondance course texts which are the same they use in the full time class i think. Have just started to use them and i think it will be ok. Am trying to study it while working full time and its challenging to commit the required time but im hoping i will make it!
I only got the big four subjects (nav, planning, loading and systems) for about $1900 i think but included are all the practice exams with the texts, access to around 25-30 practice cyber exams plus you can email Nathan or call (not much luck on that front so far though, i think he's a pretty busy chap) if you are stuck on something.....
Not sure yet if its worth it but as some other poster said above, it all depends on how much time you put into it.
Pretty fancy looking books though, will make your bookcase look pretty impressive at least
K