Is there a local source of carby diaphragms?

Looking around $600 to get genuine carb diaphragms from Kawasaki for my GT- cost more than the bike, so am wondering if there is anyone in Aus that repairs them- i.e. fits new rubbers. Is there someone here that does the job? I know there is a mob in the UK that fixes them. They might be a last resort. Cheers! 
