Here's the whole unit painted and ready for reassembly on the car. This process though not earth shattering numbers saved a whopping 4-1/2 ounces for both sides.
Add in the plastic head light coming in the mail and we could be looking at 2 pounds total for both sides. Some cars have even heavier headlight buckets where this trick can save even more.
Money spent? just a few hours on the workbench.
Oh, I forgot, $2.00 for the experimental buckets.