The caravan is a great aeroplane, and will have a long future. But let's stick to facts. I saw a pt6 overhaul (from the factory) about five years ago, and the cost was 250,000. It would be more now.
This engine had been operated by a small group of experienced pilots.
If you bought a caravan for one million dollars, there would be a reason why it was so cheap. And you would find out pretty soon.
What is the cost of a new caravan?
Utilisation certainly is necessary to keep costs down, and these aircraft are too big and costly for many areas of the outback, as the population and load factors are not there. The utilisation probably will not be either.
PC 12's only seem to be operated by government, or semi government, organisations, and I do not know of any TBM700 which is operating commercially in Australia. They have both been around for about ten years.
As a matter of interest, the worst accidents of recent times, have involved turbine powered aircraft.
They are great aircraft, but lets get realistic, and stop the sales talk.