That's only if you consider the cost of the course to pay for only the instructor, the room, and the books. At this stage of my education, I get a lot from discussion with my fellow students, and I pay for them to be there, just like they pay for me.
In any case, I wish I could come. Heck, I already sold some gear to pay for the ticket. I'll be at CJ '10, and hopefully something before then, as well.