Using the advice and a coupon found on that site, I spent $37 on new glasses instead of about $200 at Costco. If they work out as well as I hope I'll be buying at least one more pair from them. Thanks!

What I'd love to find and haven't yet are compact, flat-folding "reader" style prescription glasses. If all I needed were reading glasses that would be easy, but I want something compact that I can carry with me for driving and other distance-vision tasks.