Here are some R56 m7 prices.

Pre-intercooler charge pipe (Black/Red/Blue) £115

Super AGS cold air intake(alum) black bezel £340

Super AGS cold air intake(alum) stainless silver bezel £365

AGS-R cold air intake fibreglass with heatshield £500

AGS-R cold air intake carbon fiber with heatshield £1180

Billet oil catch can black/silver £135

c-wing fibreglass base w/carbon fibre wing £658

c-wing carbon fibre base w/carbon fibre wing £850

strut tower brace £145

Re-inforcement plates £110

Rear chassis brace £220