Well, it is difficult to say for sure, but if this is the "only" thing wrong with the car the price is not too bad. To me it looks like the chromed cover has been rubbing through the paint somehow. If the car has a sun roof, there could be some internal rust, but if there is no evidence of bubbels in the paint on the pillars it is probably not too severe.
If you are not an expert in these cars, take it to someone who knows all the weak points and have it checked out. It is well worth the investment.
Brg,
Karsten
www.elkjaer.dk