Cost to replace rear wheel bearings?

Most shops get $85 per hour plus parts and environmental fees. You would be better off to call around to the local Ford dealers and ask for an estimate as there might be other issues which could raise or lower the price which we could not tell you about ahead of time. I can tell you they should remove the rear axle cover (while draining the gear fluid) to make sure there is no issues at the gear carrier bearings due to axle bearing debris, remove the tire, take apart the rear brakes on the effected side(s), remove the axle(s), press off the old bearing(s), press on the new bearing(s), bolt it all back up to the axle housing(s), re-install the brakes, reattach the tire(s) and refill the rear axle carrier hub to its proper fluid level. The only other answer I could give you is to contact "Tracy" on this site who states he works on fords for a municipality and he might be able to shed some light on overall costs.

Have you verified the back bearings are bad? I've never seen two go out at the same time. I have access to Ford service procedure books, and believe me, it is not for someone with a couple of jackstands on the garage floor. If memory serves there are some uncommon tools required to dismantle the area and the recommendations suggest the use of another individual in some procedures. This is a job, if necessary, for the shop.