Try Trevor at http://www.rovahfarm.com/DiscoIBrakes.htm
Lucas Brake Master Cylinder
Ref: STC1284 / Price: $187.95
Application: Discovery 1 with ABS
Description: Lucas TRW PML218 brake master cylinder. Supplied with fluid level sensor.

Or , if you're not in a huge rush you can look at ordering from the UK.

 

I geuss I am just spoiled by being a tech. I get a pretty good discount on parts, if not I generally search until I find a better deal. Did find this last night.

http://http://www.landrparts.com/cat...3370+1654+9182

Bottom one is only $122. Not sure on the quality but that is def. cheaper. I like Spikes idea of ebay as well. Lots of better prices there.

 

http://www.landrparts.com/catalog/?N...3370+1654+9182

there was some extra stuff in that link