I just had a look at the configurator for the VW Touareg. The IQ. Light - LED Matrix headlights are a £1420 option.
I do remember paying nearly £1200 just to get Xenon headlight on my Mk6 GTD. It was something similar to add Xenon lights to our A3.
So I would say IQ Matrix headlights are worth it. They certainly make my Dynamic Light Assist look really basic by comparison.