I bought one for my 2018 Golf R off Amazon from R Ruiya for $15 and it works great. While I can't say if it's worth it, I am pleased with its performance in terms of keeping fingerprints off the head unit's screen. It's easy to clean and, if I scratch it, I can just get a new one rather than have to fix a head unit. I think they are worth it (I have them on iPads, iPods, Android tablets, my cell phone.......)