Was browsing ESP Design's website and they have Eibach springs for a calssic for £129 + shipping. I paid around £160 for some not long ago and thoght that was a good price. Oh, and I have no afilliation with them whatsoever, just spreading news of what seems to be a pretty good deal.

I believe Eibach themselves are having a trade sale so prices should be low at the moment (trade is about £80)