Thanks MR CMK
I only know what the (reputable with personal knowledge) pro quoted me, $600 - $700. I don't know what the final cost might have been. Going into this project, it was just replacing the axle shaft bearings. Then I found the bad carrier bearing and after much thought I decided I could replace the carrier bearings. Then when everything else was out of the diff. housing I determined the pinion bearings needed to be replaced also. If I had known all of this before beginning this project, I would have taken it to the (reputable) pro. Even if he charged me $800 it would have been worth it to let him worry about everything.