Gas turbine component costs are not really about precision components. You can buy a $5 roller ballbearing with the OD cylindricity within a couple ten-thousandths of an inch.
Gas turbine components need specialized materials developed for high-temperature applications. That means high-nickel super alloys, if you want the engine to last for more than a couple of starts.
If you think gas prices have escalated sharply, you'll really get your feelings hurt when you go to buy some nickel.
I own a tool and die business, your talking to someone who has to pick himself off the floor every time I order cobalt or chrome moly based steel and get the bill.