I was reading the article how to get an unbelievable, thrilling deal on new glasses by Farhad Manjoo - Slate Magazine and popped over to Glassy Eyes which contains links to a variety of online eyeglass sellers.
It sounds like it might not be that bad an idea, since almost all lenses/frames come from China anyway, to go ahead and cut out some of the middlemen and buy direct, provided the glasses are the right prescription, fit you and look the way you expect.
EyeBuyDirect has a program that allows you to upload your picture and then put a pair of glasses on your face. I had some trouble getting the right size picture of myself. You can see other user's attempts to virtually fit eyeglasses to their heads at the Wall of Frame.
