I say fuck that quote. If you’re really itching to do gears yourself then that’s an option. Personally I think the time/effort to dollars saved ratio makes doing it myself not worth it for me. If I was planning on doing a lot of gears I may learn it myself. My shop here charged me $300 labor each axle for my gears.This was just a month or two ago. Made the choice a no brainer for me. I used Arizona Differential Specialists.