Really awesome service. I cannot say anything about their customer service, but that's because I never needed to use them - because their products work, and they work really well.
I have ordered 3 pair of glasses from here, all on separate occasions, and they usually ship them within 1-2 business days after ordering them! That is quick! The prescription is always accurate, and their glasses are always good quality. They aren't the greatest, but you get what you pay for.
People, if you want excellent glasses, with excellent customer service, don't assume you're entitled to that when you get your pair for free, or pay a measly $30 for them.