I can tell you that 323ci's with that kind of mileage will not sell for that price on here. You may get that on ebay, but I believe that would be a tough sell honestly.
Good luck with your sale! Try posting some pictures, that always helps!
2005 M3 Cabriolet / Manual / Carbon Black (Misses Case)
2001 325i Touring / Manual / Alpine White (The Truck)
2008 M3 Sedan / Manual / Jerez Black (DD)