Someone recommended that we try out Zinni Optical, an online store where you can get glasses for $12.95. He was happy with his glasses, so we decided to try Zinni. We ordered one pair of glasses for Ann as a test. When they came in, we were a bit unhappy. Although the lenses were fine, the arms (the part that connects the lenses to your ears) were really flimsy and cheap. Because of the price, we decided to order more glasses for the family, but we paid really close attention to the pictures and only got glasses with thicker arms. It didn't help, they were flimsy as well.
So, would I recommend buying glasses from Zinni? Maybe. If you wanted a second pair cheap, an emergency backup or a pair to leave at the office, sure, that would work. But as a wear-them-everyday-all-around pair? Nope. I guess the old saying is applicable: You get what you pay for.