I'm not going to defend MINI pricing, but have you priced up a "normal" car of late? Even a bog standard Focus is 15.5K these days (granted, a Fiesta is closer in size and costs 10K). However, the point is for the coupe what is the competition? A basic Megane Coupe is over 17K and in terms of looks that's what people will compare it to. Most other cars are sold without many extras on them it's just that people like to add kit to Minis to make them more individual, it's what MINI sold as the aim when they came out. Also makes them a lot more money...
As for the Rocketman, I like it. The rear lights won't be on the production car, but the double hinged doors might make it (last large scale production car I remember them on was the Renault Avantime unless anyone can correct me?). The roof could make it but would be as an option I'd have thought.
Much more like it though :-)