For that price, Id repair rather than having an inferior product - and a turned rotor is an inferior product, regardless of what the specification states.
In reality, the rotor is first and foremost an energy sink. It gathers energy from momentum far faster than it sheds it, regardless of if it is a vented rotor. More mass equals lower rise in temperature for the same input, means better braking. Period.
For us, where 70k is an early change in pads, usually the rotors look rusted enough on the inside (vented ones) to justify replacement, as Im not chancing a super rusty rotor at 140 or 150k. That well may be anal though...
That said, the only place where I'd reuse is on the rears, and even that is old fashioned news now, as some cars are starting to bias more towards the rears, so they may well have increasing duties and requirements.
JMH