I don't need anything fancy with my prescription, so saving 80+% on glasses is really appealing. I've had to send a few pairs back that didn't work because of sizing, but they make it really easy to exchange for different frames. One thing that is annoying is that they will always push for different frames and not just refunding. But if you keep pushing for the refund they will eventually do that. I've recommended this site to all my family, they love their glasses as well.
Needed to do a return, made the process easy as long as you are just exchanging for a different pair. If you want a regular refund you have to push a little harder but they will do it.