Buy one pair of eyeglasses and get another pair for free when you enter coupon code BOGOFREE at checkout at GlassesUSA. Plus shipping and returns are free on all orders. Choose from hundreds of styles. Prices start as low as $19, with an average price of about $53 shipped for the best variety. This sale includes single-vision lenses and reading lenses, but please note that name-brand and premium styles are not eligible for this promotion. You may use your FSA or HSA money to purchase prescription eyeglasses, prescription sunglasses, and contact lenses at GlassesUSA.