I've looked into this and it is not cheap, the best I can get so far is.
Both Xenons, controllers, ballasts etc. 999 Euro
Self levellers 219 Euro
Central Electrical Control Unit 299 Euro (this needs upgraded from the one in your current car)
Adapters 50 Euro
Total cost for parts approx 1567 Euro ; £1300
You also need the headlight washers to be legal which is fine if you already have the winter pack.
I have given up and just upgraded the bulbs.
