Unfortunately, unless you are a budding DIYer you will need a new one ($1300-1400 with delivery) last time i checked. A used one (i was seeing them for $600-$800), or a used broken one ($ vary greatly) with the plastic glass still intact and you do surgery with a Dremel and replace your working one.
If you go the DIY route, please document and post. I'm sure many would be interested since the cost of the new one is so high.
A helpful tip if you go new: The new light does not come completely plug and play. There is a small electronic module that needs to be harvested from the back/bottom side of your old one. But other than that, it is a direct replacement that is relatively easy. There is a bolt that is accessed from the side between the bumper and fender that some have difficulty with, but if you take your time and use an extension you should have no problem.
Good luck.