I just had both on mine changed. It cost 2 hours labor & parts. I didn't do it because it is WORK. You have to remove the brake assembly, remove the tie rod, you will need a special tool or just right sized piece of pipe to press out the old bearing, and you will need to press in the new bearing & reassemble. Then, you need a front end alignment. The dealer wanted to charge me for 4 hours.
Good luck!