Our glasses start at $38 for a complete set of eyewear and come with a one-year warranty—something that other retailers charge extra for. Given that the average cost of prescription eyeglasses in 2014 was $274.20, according to The Vision Council, shoppers can save big at Walmart. David Puchala, New York state-licensed Optician and Vision Center manager at Store 1744 in Webster, N.Y., agrees.