Something made me look on their site to see what the coupe was going for now, and was surprised at a very reasonable £20k for a 20k miler.
http://www.hexagonmoderns.com/car_sales/BMW-Z4-S54-M-Coupe/8925.htm
Guess that is not too bad for a non flimper spec with warranty.
http://www.hexagonmoderns.com/car_sales/BMW-Z4-S54-M-Coupe/8925.htm
Guess that is not too bad for a non flimper spec with warranty.