Barons, it cost me about $125 or so from hellrisers.
CURVED 'LINER LICENSE KIT by Baron Custom Accessories - Baron Custom Accessories
Its funny, because my wife is very thrifty, and hates when I spend money on stuff like that, on chrome, just doesn't see the need. But when she saw that license plate mount, she asked how much it cost me, I told her, expecting her to go into a seizure of something at that point. She just said, "huh, that was actually worth it, its beautiful."