i dont know the seller off hand. let me look and see if they still sell them. i know it was about $70 shipped for all 4 housings with bulbs. not hid though, just H4.
Interior panels are super easy to make. A headlinner is just aa easy as any panel. When I get around to doing mine I'll show you how incredable easy it is to make. Start looking for a big piece of cardboard. You want it be the size of your headliner.