I have purchased < $20 glasses from zennioptical without a perscription online many times that were every bit as good as $500 ones I bought at lenscrafters, wit

I have purchased < $20 glasses from zennioptical without a perscription online many times that were every bit as good as $500 ones I bought at lenscrafters, with near identical styles. I started buying in bulk and worrying less about losing or babying them.