Yes Digsy's correct. The bolt-on ones are Eibach and are about £100 a pair. Big Phil supplies them and knows exactly which ones to fit. Mine came from him and are 20mm iirc.
That is probably trade they have offered you. I expect one of the traders on here could confirm that. IMO bearing in mind the current economic climate, I would say that you should try for around £10500 - 11000.
First saw one in a magazine ad and then shortly afterwards at the Autosport show. Pretty much decided there and then that it would be a car for me at some point.