thats really really cheap mate and speaking from experience isnt right,i priced them up from renault at £104 each roughly 2 months ago,i ended up going for a pair of rear pagid racing discs and pads which where virtually exactly the same price but by all accounts better quility,i'd strip yr fronts as well though mate cos after doing my shagged rears there was very little difference due to the fronts doing all the work,on checking the fronts found they where in similar condition,the inner pads on all 4 corners had to be hammered out,i put ds2500 pads on the front with ktec black edition grooved discs and boy does she brake hard now,its all about getting the brakes to work properly though to be fair and not just upgrading,u might also want to change your brake fluid as well as if yr pads have been sticking then you may well have boiled the fluid