Are people seriously paying that for a used CS? Madness. I wouldn't even pay list price for it. Its got no back seats, no folding mirrors, no arm rest - the list goes on. It's a track day car, anyone who professes it's anything other than that clearly doesn't commute in a car to work.
As for the chap that got rid of his GT4 for a CS, well, each to their own but what?!