New R 2008 tail light

I discovered that I need a new right tail light today. There’s condensation in the reverse light portion of the housing. I checked eBay, and it seems there are taillights available for about 175+ shipping. Supposedly the lights are from Germany from the manufacture ULO. The ad says they are OEM. Is ULO the OEM manufacturer? Where can I get OEM lights? I do not want re-pops.

EDIT: has someone taken these apart before? Looking at a YouTube video, it looks like I can disassemble the housing. If I take apart and let it dry out, maybe I can silicone the seal to keep the water out? (assuming the rubber seal provides the only seal?).