Nothin to do with me, but came accross this reasonably low milage example, top end at £18.9K, looks like a nice example:
http://www.cameronsportscars.com/cars/bmw/z4/3.2mcoupe/4482/0
http://www.cameronsportscars.com/cars/bmw/z4/3.2mcoupe/4482/0