I just emailed Hella. That price was to include the lights. If you just want the housing, I think it can be done for $275. These are very early numbers. The guy I talked to at the manufacturer thinks he can shave some more here and there. I do not know what Hella is going to do. Some of their lights are pretty expensive. I have just started the process of finding lights for the holes. I have asked them to quote a price for the 90mm lights because these should fit the best.
By the way, does anyone know where I can buy a headlight for fitment? It does not need to be pretty.