Starting on December 5th and running for six weeks, the author of "Clojure in Action", Amit Rathore, is leading an online introduction to Clojure course for just $325. See the CodeLesson web site for more details on this Clojure course.
I'm fortunate that Amit is local to me so I've attended two of his one-day training courses already. In fact my first real introduction to Clojure was Amit's "ProClojure Bootcamp" back in May 2010 and it was a great jumpstart. More recently I attended his "Day of Macros" course which was pretty mind-blowing. Each of those cost $199, so the six week online course is great value since it will cover all of that and more!
If you're at all interested in Clojure, this would be an excellent way to come up to speed and find out what all the hype is about - for a very reasonable price!