I have always been "scared" of high milage cars due to the many expencive problems you could have. My Z was the highest milage car I bought with 52k on it and paid just over 10K, went to a garage the other day and got to replace few minor things + have to replace the shock absorbers, overall I'm very happy with what I bought, but, even if I was on a thight budget I wouldn't gone over the 55K miles, too risky, not many people look after their car propelly!