Man-A-Fre quoted me around $300. per side last time I was in L.A.
Ben is the head wrench ( from Australia) and been working on cruisers his whole life.
Regardless who does it, put in Marlin Crawler inner axle seals. You can find them here HD Inner Axle Seal, FJ40-FJ62 | Marlin Crawler, Inc.
Do it yourself. Everyone goes through the same apprehension and then when it's over comments that it really wasn't that bad. The collective rebuilds done by members here is probably in the 1000's so there's plenty of knowledge and advice. Read posts, ask questions, buy parts, fix truck.