Actually, its not. It cost me a couple jugs of diff fluid, the seals which are cheap, and I also did my CV boots, wheel bearing seals, and knuckle seals at the same time.
Look here:
http://vehicross.info/forums/showthr...le+maintenance
Of course, I did it myself, so it only cost me for parts and fluid. If you have a shop do it, it will probably cost a few hundo. Its more of a pain in the seat than it is expensive.
Bart