CFAI exams - worth it?

I have been reading other posts regarding CFAI exams. It seems you cant print them out etc. If i basically learn from going back to the question I answered wrong, should I buy the CFAI exams? What other benefit do you see? Thanks.

I don’t think anyone can tell you if these paid exams are worth it until after the exam. I look at this way. If I have to spend a few $$ now in order to better my chances or not having to re-take this exam next year, then their worth every penny if not more.