Carvana says $55,100 for the M3, but I think I could do better on my own. I just spent >$1,500 on full front Xpel and the interior is immaculate. I also upgraded to full-screen carplay. It only has 11,500 miles, never had a single issue, and still has 9 months of warranty.
I was hoping for closer to 60k based on the ads I see.
EDIT: Autotrader has cars like mine advertised for over $70k.
https://www.autotrader.com/cars-for-...&numRecords=25