I did mine myself since the warranty had expired at 100,000km. New filters all round (fuel filter the dearest at $120 and air and oil pretty much small change). New lube all round (auto transmission and transfer the dearest and hardest to get to). Theres mention in the manual of the timing chain being replaced but Nissan and 2 other ind' mechanics assured me there is no need to do that and aparently that is generic info related to the petrol model. All new belts at the front of the motor. I got out of it for under $600 buy everything from Auto One and a couple of hours light work. Didn't quite need it but I ended up putting new brake discs, drums, and pads aswell.
The mechanic in Western Sydney that fixed my 4wd issue has a cheap hourly rate and is very straight forward. Where abouts are you?