To answer the original post the Cobra's are great machines. Very, very fast!! They are full on race machines and like any full on race machine they require regular maintenance and replacement of parts.
I'd imagine that the Cobra's in Australia are kind of like the TM Racing machines in the USA, misunderstood and rare. This does not make them bad choice, but some folks are afraid when they don't see a dealer carrying the bikes and parts nearby... even if they never step foot in that dealership to buy a bike or parts... still trying to figure that thought process out!!
Cobra makes super fast mini racers... most of the very serious competitors in the USA use these machines.