One response....
You can get the parts from Atlantic British and others (like our sponsors on the top)for less. AB has the OEM caliper as well, since thay are an authorised LR parts vendor now.
If you just want the replacement stock parts and rotors, you can get them on eBay for cheap.
http://search.ebay.com/land-rover-discovery-rear-rotor-caliper_W0QQfromZR40QQsojsZ1
http://search.ebay.com/land-rover-discovery-rotors_W0QQfromZR40QQsojsZ1
Just remember that if you decided to put the new kind of rotors, use the slotted ones unless you are buying the expensive rotors. The drilled ones (the ones with the holes) are prone to crack between the holes unless it is the right kind of metal.
The job itself is very hard. Airtools and half-inch tools are needed here.
Unless you are mechanically inclined, it is a real witch to do unless you have the tools and the armstrong for it. I just did the rotors and the pads and I still have the clicking from the front because the shims are not readily available.
Huh.
The high difficulty factor is taking the rotors off. The Land Rover is a truck down there and you know about the rust factor. Each rotor is half-hour , twenty minutes each if you are pro and all the tools. It is hot and hard work.