This is encouraging... Prices for low mile Z4MCs in the US are definitely firming up. Two years ago this car would probably have listed for $32K.
http://cgi.ebay.com/ebaymotors/MUST-READ-RARE-M-COUPE-NAVIGATION-PREMIUM-PKG-HEATED-SEATS-FRONT-REAR-CAMERAS-/121069031233?pt=US_Cars_Trucks&hash=item1c3046cf41#ht_17592wt_1182
http://cgi.ebay.com/ebaymotors/MUST-READ-RARE-M-COUPE-NAVIGATION-PREMIUM-PKG-HEATED-SEATS-FRONT-REAR-CAMERAS-/121069031233?pt=US_Cars_Trucks&hash=item1c3046cf41#ht_17592wt_1182