@ the magnet idea ^
Anyway, I have 2 sets of polarized Oakleys and they are AWESOME. They get rid of every bit of glare and are very clear. The older pair, I have had for almost 5 years, they still make all the parts for them but I don't need them as they have held up just fine! Also, I think that making those shields would cost (them) a lot more than 50 cents. Especially after you consider R&D.
I think it's a great idea but I'm not trying to find 1,000 people (I probably couldn't) who would be willing to dish out what they would probably want for one.
brandon