why do you specifically want a roadster Pete? Especially if its just to keep for the short term? do you need the roof down to fit all your dodgy stuff in it?
That one looks a decent price but you can tell by the ad the trader doesn't know the car so be careful - if someone from here is nearby they may go with you to have a look. Query the tv/dvd/satnav as well because if its what was in when it was in Japan it won't work except to play CD's. I replaced my import stuff with new.