The mileage may be putting people off. More fool them - with all the work and new parts on this car you could afford to drive it for a 1,000 miles, have the engine go kaput and break it for spares. And still have your money's worth. I doubt most people on here do more than 1,000 miles in their Z3 over a couple of years too.
Main things with higher mileage - has it been maintained and pay the right money.