When its time to redo brakes, if the rotors or drums still look good an are not warped, I reuse them, not turned. The last set I had turned were really messed up, and it cost almost 1/2 the price of the replacement parts.

I either reuse good rotors or drums, or I buy the new junk. I'm not paying to have them turned at the only place in town that will still turn them.

Our turbo PT eats rotors about every year, they crack at both sides of the center supporting ribs on each of the brake surfaces at several areas around the rotors.