I was the Becker campus rep about 10 years ago, so I got to take the course for free, although I didn't finish it, because I wasn't taking the exam then and I gave it to someone else in my classes at college. At that time, the exam was still on paper, and the thing I liked about Becker mainly was the chance to learn an exam-taking strategy. I was in my Master's program at the time, so the content wasn't as useful as it would have been if I had taken Becker later after I finished college, before I actually took the exam. It helps a lot to have some feedback on the writing portion, because sometimes it is hard to evaluate your own writing as a grader would. Becker is most useful if you have been out of school a while, as a refresher, and to get you in the habit of studying on a schedule. I don't think anyone that goes in and tries to take the exam cold without any preparation does very well.
I passed the exam in 2005, but I only used a paperback prep course from a bookstore. If you are very self-disciplined, you can do it that way, but I did miss having a chance to take practice tests on a computer - just my 2 cents worth...