Carmax has 2 right now:
http://www.carmax.com/enus/view-car/...results%20page
http://www.carmax.com/enus/view-car/...results%20page
Add about $1000 to ship to PA or fly out there yourself if you want to look at it first. On a side note, I can't believe 8-9 year old Z4 M coupes are selling for almost the same price now as they did 5 years ago when they were only 3-4 years old.