Bay seniors finding themselves squinting harder and quietly seething when they see the price tags on glasses have a hard time wondering why an ounce worth of designer plastic should cost $700. As a matter of fact it doesn’t. Since 2011 Warby Parker on Divisadero in the city has been selling frames for as little as $95. Which is a godsend since we seem to be misplacing our spectacles more and more frequently.Granted Warby Parkers all look like something Clark Kent would have would worn but like much of the designs of our childhood, they are newly fashionable. Currently $5 off the first pair.