HI All, My Discorangie key remote is acting up.

It is in effect a 06/2000 Discovery V8. I got to work this morning and couldnt lock it with the remote. Worried that the immobiliser would come on and I wouldnt be able to get it going again I drove back home.

When I got home the remote decided to work. This is the only remote I got with the vehicle. I don't wont to get stuck as I do not have the override code nor could I use it as the drivers doors lock does not have the switches connected. (Soon to be rectified)

My question is where can I get a new remote? I have read on this and other forums that it is in the vicinity of $400 and then I will need to get the car "programmed" to recognise it but surely that can't be right?

Is there an aftermarket one available?