ok. I'm gonna break this down. And don't worry, you're not pissing us off, we can talk about headlights all day long.
as you know ZKW's are a brand of headlights. Ellipsoids is a type of headlight that includes the projector lighting system, ellipsoids do not come stock with DDE or HID. DDE's are an option you can get with your ellipsoids, mine cost me $630. HID's are another option available for ellipsoids, HID's are really expensive (I can't think of the figure off of the top of my head).