Local Power, a not for profit group based in Brisbane have a new Solar Panel (PV) buying group going.
After over 400 homes and 600kW of power installed in buying groups 1-4, buying group number 5 is now open.
The Local Power model is to get a big bunch of householders together and then buy the solar panels and inverters in bulk to keep the costs down. Prices for a 1.5Kw scheme start at around $3700. So if you are interested take a look at there website, where all the information and costs are laid out.
Also they generally fill their buying groups pretty quickly, so if you are interested, don't muck around and get in touch with them.