Buy one pair of Rx eyeglasses, get one pair free when you apply coupon code GSBOGO during checkout at GlassesShop.com. Choose from dozens of styles for men and women, with some styles priced as low as $14.95. You can get free prescription lenses, reading lenses, or fashion (non-prescription) lenses as well. Just add both pairs to your cart and apply the code to see the discount. Plus each pair can be a different prescription. Shipping is free with $49 or starts at $4.95 for orders under $49. Some lens choices and other upgrades are extra. Sales tax is not charged in most states.