Bunnings solarfirst Solar Hot Water System $1485 installed save about $4000
I had the Obligation free home inspection performed the same day, and found I was eligible for the system at that price. You must be the home owner and assign to Bunnings all government rebates and renewable energy certificates (REC's)
From the research I've done, a similar system through say Origin Energy would have me approximately $2500 out of pocket, after my eligible government rebates.
The general cost of these systems is approximately $6000.
Not sure if this system is available in states other than Victoria.