Eh, I disagree. When I worked at a shop in NJ with a rotor cutter, there was a kid working there that couldn't cut a rotor to save his life. Yes, it's a VERY basic machine, but there are plenty of ways to screw it up if you try hard enough.
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For the Miata, rotors are so cheap, just buy new ones from Napa. I think they are actually cheaper (or damn near) than the cutting IIRC.
Just take a peek at the usual things: brake lines, ball joint boots, all the bushings in the area, axle boots in the rear, shocks for leakage...basically at least glance at any wear item.
Anytime I have the wheels off the ground I check the tie rods, wheel bearings, and ball joints using the "shake test."