Where have you seen them for sale?,thats really cheep,seen some on pistonheads about a month ago for a grand which aint a bad price,from what they are new.ive got the same brakes,they drive like normal brakes but when you need to stamp them on,crist,saved my car a few times,like a deer ran out infront of me,i slamed them on,and the person in the back ended up on the dash.i would'nt say there great just with high power great investment.downside you'll have to find wheels to fit your brakes,or over them (huge),and i just bought new disc pads with bell housing imported from america £950.they did last 7 years though and thats the pads as wel,the groves went on the discs,7 years aint bad though.id say get them,just make sure the discs are good or itl cost you £1500