I bought a pair of Zennis in 2013. I have a strong prescription and got maxed out UV, indexing, etc. on a (imo) good-looking frame. $75 for what would have cost me $300-400 out of pocket after my vision insurance credit. Additionally, I was able to submit the $75 as an out-of-network expense. It took some paperwork, but the return on my time was worthwhile.