Glasses USA takes 50% off your choice of a single-vision prescription and frame with code SPECIAL50. With frames like the pictured Comet Purple priced at $38, you'll see the price drop to $19. In addition to being the best price we found, all orders ship free. Note that specialty prescriptions and many frames cost extra. But, if you find this code doesn't work, try our exclusive code BRADSDEALS42, which takes 42% off most orders. Sales tax is charged in most states. We do not know how long the 50% off code will remain valid.