as long as it is reflected in the price i cant see a problem with a high mileage is200.the cambelt should have been done already so the servicing should be ok.as besty said the whole car has done the miles not just the engine so dont be fooled by dealer waffle about these cars go on forever as no car go's on forever with out having things changed like the clutch,disc's,gearbox,starter,alternator and so on .not to mention the wear on the interiour and the bodywork.i would say a full lexus history is a must as well (backed up with bills for the work as well ).