BMW dealer states that I need a right front wheel berring should both be replaced on 2005 BMW X3

the car has 67000 miles there is a loud noise in the front end over 30 mph The dealer warranty expired 1200 mile two months ago He wants to charge 780.00 to replace the right front wheel berring only. Should they both be replaced and what is the average price. The car was inspected 1200 miles age by him and was told that everything was fine. Now I need rear brakes and a front wheel berring

Asked by for the 2005 BMW X3
I don't think I'd want to replace the other bearing if it's still good. 67k miles is not a lot for that type of bearing. A good technician should be able to tell if the 'good' wheel bearing is failing at this time, using a stethoscope. You may want a second opinion and second estimate from an independent Beemer specialist.
If you want to find a specialist, here's a directory link for you: