7 return flights AMS-JNB will get me PE for under € 4,900.00.

45 return flights (90 segments) AMS-CPH will get me PE for € 12,735.00. That's admittedly considerably less than the expenditure € 21,075.00 required to attain PE on this route by flying 75,000 miles (70 return flights), but still a lot more than needed when flying longhaul.

All calculations assume lowest available fare.

johan