Unlike other products, glasses are custom made products. Glasses are professional vision correction tools for people with vision problems.That is why they are costly. But you can still find some online stores offer glasses with high quality but with affordable price, usually 1/2 lower than that in brick and motor stores. Firmoo is one of them, they have large selections of frames,but you can save up to 80%-90% for a pair, my last pair cost me only $20 with shipping.