This seems to have expired at the end of July and applies only to the electric start machines, so I'm not sure if this will help anyone. It makes you wonder if the US importer is giving $1000 cash back directly to the US dealer.
http://www.gasgasaustralia.com.au/GasGasFPMidYearSale.pdf
http://www.gasgasaustralia.com.au/GasGasFPMidYearSale.pdf