You could certainly makes a turbine somewhat cheaper than the present prices would suggest.
But that would not address the major problem that all turbines ahve - their fundemental lack of efficiency. As soon as JetA1 becomes taxed - as inevitably it will do, the 'advantages' of a turbine vanish and you are left with a high power to weight ration and terrible fuel consumption, noise and pollution. So not an obvious powerplant for the future as fuel costs increase.