Great Glasses

Great Glasses goes for the bulk market in eyewear: they offer free eye tests, and three-​for-​one glasses. You’ll even get a spray-​bottle of lens cleaner, too. They seem to have a mid-​size selection of frames. (Although the bin of glasses cases that you get to pick from has some pretty wacky designs, and not enough plain ones. Maybe those just run out because no one wants the others.)
They don’t have bargain frames (they start around $ 250 here), so Great Glasses isn’t the best place to go for a single pair of glasses. When you add on the three-​for-​one deal, it becomes a good value, however. What’s also good is that you don’t have to get all the glasses at once; you can wait up to a year to get your second and/​or third pair as part of the deal.