Ford Explorer Rear Wheel Bearings

My 02 explorer began making a grinding noise in the rear while on vacation. I just happened to be near a Goodyear repair shop. I took it there because I knew if the bearing went the tire could fly off at high way speeds. The total cost was just over $400.00. I called my mechanic near home and he said the repair bill is accurate. $1300 seems really high. If you haven’t repaired this yet don’t wait too long.