I would say this is good buying at that price, assuming it is as described. BMW only made 222 of these in rhd so its an opportunity that may not come along again for quite some time, and it is not beyond saving ( get rid of that terrible looking towbar and replace the front bumper)
Yes it is more expensive than a sedan, it should be, it is a lot rarer, and yes you could get other arguably better cars for the money, but what you can't get is another naturally aspirated 500hp V10 rear wheel drive station wagon!!