https://www.charterhub.com/listings...498&Longitude=-83.8736111&Latitude=35.9636111
While not a turboprop, the C340 and Baron listed in the link would accomplish the mission at a reasonable price.
Nashville has plenty of options, but you’d probably have to pay for the empty ferry to TYS.
I know of a King Air 200 that’s based out of KCPF. I think a BE20 goes for roughly 16-1700/hr.
Planesense is a charter company that operates PC-12’s. I saw them come through quite a bit when I was working at KTRI. That’s a reasonable cost per hour as well.