A number of posters have quotes somewhere in the region of $600 for the windshield. A LKM is also around $600 and I had to go with the non-xenon as I don't have the self-level computer stuff to interface with the LKM. I'm not sure if the extra wires are actually in place for the light sensor.
I don't know if the auto lights is worth the extra $$$$$! I have it on my other vehicle an it's no big deal.
There is a much cheaper Ford retro kit for around $75 that you could splice into the light wires that is self contained.

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