I think you're in the ball park at $55-$57k, you should notice more and more M3's in the market as the models change over so stick with that price. Is it private party or dealer?
'01 M3 Cab. (gone) '04 Maserati Coupe Cambiocorsa (gone) '08 S550 (gone) '07 550i (gone) '07 911S (gone) '08 M5 (gone)
'10 M3 Alpine White - DCT(gone) 2012 Porsche 911S