.....what is the going rate for a 53 plate 330CI manual from a garage
80,000 miles.......service history.
Cambelt problems?
I've just returned from a test drive and it felt as tight as a drum.  
 
as the famous word/sentence (whatever)  the car is as good as its owner(s) .. I have seen bimmers with galactic miles which are tip top.. and seen some with few miles in crap condition..  so it depends.. one warning , some of them have faulty vanos units and its expensive to repair..  also there are many other things that can go wrong.. so its a must that you see have to see its service papers..  also some of them crack from the rear axel connection points.. if you ask my opinion bring it to a bmw specialist  and lift up and examine below the car.. also connect it to computer and check other things.. will tell many thing and pay for check..
I have seen examples at 150K miles that you put a coin on engine at idle and the coin stays as it is 
 
 one  more, if you will pay that sum, E46 m3 also is worth checking as maintenance costs not very different..  but powerwise they are very very different.. only problem is clean examples are rare..  so get ready to empty the bank 

 but be warned once you drive them (m3) you will be addicted  
 
  
 ps: remember you live only once and no one brings even a penny to other side 
 
 
   (buy fot yourself)