the green Z1 was parked next to us, chatted to the owner a few times through the day. it was a rather nice example.
He'd bought it from a chap in Scotland who'd had it on the market for some time but couldn't get anyone to travel up to view it! Sounded like he negotiated a bit of a deal, although no numbers discussed.
Apart from having the seats reupholstered, and a few repairs to panel mounts, its as he bought it.
(panels being plastic, the mounting points become brittle and snap off but there is a rear for them apparently - learn something new every day!)
The red Z4 to the left of the Z1, the chap had bought from new after having a Z3 previously. He recounted he'd had a problem with rough running. Garage told him he was driving it too timidly, "use sports mode and give it a thrash occasionally". Which he now does and its been fine!
Well you don't need to be told twice do you!