I recently paid about $3,100 in taxes, fuel surcharges etc, for F, using 2 for 1, from west coast to CPT, return from JNB with a 2 day stopover in London on return. Total miles paid 270,000 for 2. Definately worth it to me for 21 hours of flight time. After all the miles were basically free so I don't complain about high taxes and fuel charges. Almost feels like a bargain to me.