Cant remember the prices it was a while ago i bought them,
If you are just getting a stage 1 remap you can get away with just the cat back exhaust which will cost you roughly £450 although this is not required, its just an optional extra if you want abit of noise !
If you are going stage 2 you will need the full turbo back system which is about £1150, you are better going for the 200 cell sports cats as you wont have any troubles come mot time, if you go de cat your car will more than likely fail an mot