I know that user DSrugis on bimmerforums.com was looking to sell his White M3/4/5... It had 90k miles and was located in Michigan. Super clean and well maintained. Also supercharged... I would check him out...
2010 E70 X5M | Black | Black | Stock for now.
2008 E90 M3 | Interlagos Blue | Speed Cloth | Sold
2011 E92 M3 ZCP | Space Grey | Black | Sold