Touch wood...I've never HAD to undergo any major repairs. If such repairs were warranted...I really have no idea how I'd go about tackling them, to be completely honest.
The EAS has held up (Allah be praised), the engine gets minimal running (say 50 odd kilometers a month), and the electronics have generally behaved (less one problem which STILL persists). And yet, I STILL have that half-cut stashed away. That should be an indication in itself, of the paucity of parts in the local market. To exemplify this, let me quote a little story about my favourite "Range Rover Nightmare" (every RR owner has at LEAST one of them, and they still love their RR to pieces. As do I!).
One of my drivers, decided to connect the terminals of the battery incorrectly, which resulted in a power surge that fried the RR's ECU. The vehicle would simply NOT start, at all. It was like a massive paperweight...pretty, but completely motionless, and entirely useless. I changed one, which I was able to get locally (I was in Quetta at the time). The short circuiting in the power supply promptly fried that one, too. So...I got yet another. AND a new power supply. And it worked fine for a while. After that, the RR developed a strange problem. It would drain the battery overnight, because for some (still unknown) reasons, the vehicle would keep locking and unlocking the doors, switching the lights on and off, and would suddenly decide that it needed to give a report on how the airbags were not working, even when the machine was turned off, and the key would be removed from the switch! I went absolutely nuts, trying to figure out what it was...and I STILL don't actually know. NEITHER do Sigma Motors in Islamabad, btw. The solution I was forced to adopt is a desi one; a 100 rupee chor switch, which cuts off the electric current, before it enters the power supply. This way, the battery is saved from draining out, completely.
For the daily stuff, it's fairly straight forward, since a great many everyday bits are interoperable with Land Rovers.