Have a look in the classifieds on here. Nearly new sets come up all the time for less than half what dom said. You can get a cheap set for under 200 quid but they dont tend to last too long and the ride is pretty pooh.
Fook Oh well looks like the savings account is going to take another rather large raping soon then Dom when you did your coilies was it pretty straight forward common sense stuff to change over? ive found a couple of guides the rear looks piss easy but the front looks more complicated. also how easy is it to set the ride height equally front and rear?