If you can get to basingstoke Myallloys.co.uk are great similar price but you get full sand blast and powdercoat inside and out come out brand new. Had mine done last winter and finish has been great and very tough.
67 sytner is only quoting for cosmetic repair not full strip and redo.
Titanium Silver E90 LCI 320D M Sport Saloon
- Logic 7/ USB Connectity and Bluetooth/ Visibility Pack (Xenons, Adaptive Lights,Auto Wipers Lights and Corner Lights) / Sun Protection Glass/M Spoiler / Brake Ducts / BMW Performance Pack / BBS Wheels / SS Cat Back straight through with BCS Backbox