If you click on the Rhino Rack website you will see that they are giving 80% off racks for specific models.
http://www.rhinorack.com.au/
[15/5/2010 - edited URL to point to main site, as RhinoRack have taken this off their page]
Basically Rhino Rack Australia is trying to get pictures of all the different cars so they can put it on their marketing material / website, and are looking for quite a few models.
My car is going in this coming Friday. It took them around 4 weeks to get around to calling me and I had given up hope, but strangely enough the call came through on the day I was about to book and pay full price.
Interesting bargain. I looked up my mazda on their rack selector page and basically a $309 roof rack comes to $61.80 so a very handy saving.
Although I must admit it doesn't look that great on the photo they've got (ironically my exact car and colour). I can imagine these would look great on a compact SUV and for some reason I see this looking great on a Subaru Forrester. +ve from me.