I've got a concert tonight at Vector Arena (and Metallica next week :-D), and am looking at the best parking options. I don't know the CBD that well, and am looking for a nice balance of convenience and price.
Last time I attended an event there, I was lucky enough to secure a park just behind VA in a little council car park, which cost only $6. This car park only had a handful of parks though, so I have my doubts that I'd be so lucky with a larger scale event like the concerts I'll be attending.