Do a net search -- you can usually find a better price on new or used sets...I think you are better off buying a complete set from Simon and Schuster (3 levels, 30 cassettes each level) than one of the abbreviated courses. I think the place I got my French set was LanguageLovers.com.

Pimsleur is an outstanding INTRODUCTION to a new language. The key here is some people expect more from them than they will actually deliver. Depends on what you're looking for. In my case, even after completing the full three-level course, I didn't have near the competency in French I needed for my job.

Publius