its funny that £500 can be thought of as a lot for car suspension. My comparison/reference point comes from my bike, due to the nasty nature of the mountain bike industry a set of suspension forks that used to be £500 5 years ago are now around £1000, and include no more R&D, and far less materials than a set of 4 coilovers!
When the shocks on my GTi give in, I will look forward to getting some lovely, reasonably priced, coilies!