Nearly All of John Mayer's CD's and Music DVD's are currently on sale at JB HIFI. I bought these two DVD's at this sale price just recentaly because i was suprised at such great value. "Where The Light Is" is one of my favourite live concerts EVER!! because of the quality of the recording and for the fact it is john mayer. :) He plays 3 different sets; Acoustic, John Mayer Trio and his full band. Just check wikipedia for the setlist - http://en.wikipedia.org/wiki/Where_the_Light_Is
"Any Given Thursday" Is also a very good concert consisting of mainly his earlier music and a couple of cover's but it jsut doesnt have the same amazing feel that "Where The Light Is" has in my oppinion.
They are both $12.99 each so i recommend buying them, if you dont like him, it still will have been an experience.