Just wanted to share a datapoint. As u/pandaperth accurately stated that the base fare for DONE4 is NOK 57,959.
But when AA system does the currency conversion to USD they do not have the realtime exchange rates. So when I was first quoted the base fare was $5,469 dollars, which was off by some. But i had them price a itinerary from ARN. And than revert back to OSL a couple of days later. And this time the base fare calculated was $5,390.