If you're looking to save money, you could buy the books, and study on your own. I know, that's not often the path taken, but really, it's not a bad choice, especially if you're opinion of the class is that most people get screwed by having to watch the lectures on TV. (I agree.)
Get yourself the BarBri Conviser, and learn as much as time permits. That book covers both state law and MBE. It also covers the distinctions between the two which is important to know for the state law essays (which will sometimes test MBE subjects, but expect you to know the distinctions). Apply the law by practicing old exams which have been released by the Board of Law Examiners (You can find nearly ten years of these exams online). Don't waste your time looking at essays prepared by BarBri, go to the real exams which are the most indicative of what you'll see on your test.
Get the PMBR red and blue books to practice applying MBE law to multiple choice questions. Do the few thousand questions that the book provides.
Give yourself plenty of time to learn the material, and this should be sufficient. Of course, if your firm is paying for your review, you may just want to take the course because the course has worked for quite a few people. But, in my opinion, self-study is an alternative.