As said, the milage is no problem depending on the history. Just as a low milage is no good with bad history.
I prefer the idea of a higher mileage car with more motorway miles from longer trips, and serviced on time, to say a lower milage car from a lady owner doing only town driving. Short trips on cold engine etc. Especially as the higher miles offers potential for a lower buying price.
So you have to judge as best you can on an individual cars merits. Is it due a 'big' service with potential for some of the more expensive items needing replaced, is it nice to drive, tight and smooth or not so???
Gotta be worth a test drive if your interested