"You can pick up a decent -20 for $60,000 - $80,000, but come the first Hot Section that you need parts and the HSI will cost around $20K-$40K."
That $100K still gets you into a PT6 that would last for 1500 hours. I have been looking at the IO-550N conversion that cost $63,000 and Ill get to worry about maint cost every week.