Looks to me to be a UK car that has had the rear bumper replaced for whatever reason. I think the wheels and the rear bumper change will have put most buyers off (i.e. not standard) so the dealers have had to drop the price to try and sell it. It looks pretty tidy, esp the engine bay. Someone has looked after it or the dealer has had it cleaned which I doubt. Also noticed the ash tray appears to be missing.
You need to get the background of why the rear bumper has been changed, and if its all legit its a bargin, but any sniff of crash damange and I'd give it a miss.