Hmmm seems a smidgen expensive to me. I'd have though you should be able to pick up a reconditioned unit in the UK for about £500 depending on engine spec. Fitting
Well shouldn't cost too much....
But is it really shot
Not that long ago I spotted an X trail at a garage and because we were thinking about an X trail I was inquisitive as the fuel system had been stripped out. The mechanic said the fuel pressure regulator was a regular culprit on Nissan diesels and that it was possible to change that and a couple of valves on the pump - so couple hundred quid and not thousands.
He said that most folk (folk=fitters) would just bolt on a new part rather than try and fix what's already there.