Why are Z4 headlights so expensive?

[Sidewaze Samm]

Think il ditch the idea unless I can open mine up easy enough and paint them.

Whoa, hold on there... whereabout are you? I might be interested in swapping my black headlights for your silver ones...

Berkshire.

Nah, I think that's a tad too far to work - travelling, bumpers off two cars, two sets of lights out and in, bumpers back and travel home again...
It was just an idea - but someone who doesn't have a 3.0 and is local to you might be up for it, so could be worth posting in marketplace to see?