Just quoted for $6,600 from Landrover - Brookvale NSW
My earlier reply seems to have failed so I'll try again.
A few things to check
* Has the high pressure pump actually failed?
* Has the fuel filter ever been changed? A partially blocked filter might produce bizarre problems
* Is replacement of the high pressure pump a body off job? Replacement of its drive belt is not.
* Is replacement of the low pressure pump a body off job?
Get a detailed quote. The body can be removed in 2 hours or less and replaced in 2 /12 hours by a good operator.
Because access around the engine is difficult it is wise to follow through on some maintenance work while the body is off.
The camshaft front timing belt (service intervals seems to be 100,000 miles - 160,000km) is not a body off job but easier and quicker to do when the body is off. My Sport is an early one (2005) which had a potentially fragile cam belt idler boss on the oil pump. I had the belt and oil pump changed at 100,000km although the original belt proved to be sound.
Check/replace the plastic coolant manifold on top of the engine. Access is easy. The manifold can split, dump the coolant and result in complete engine failure. The original equipment part and periodical change is the economical approach. The aluminium after market replacement is expensive and, I understand, not without problems.
Suggest you get an assessment by a reputable independent Land Rover repairer. I use 4WD Industries at Maitland.
Good luck.