Eyeglasses store often offer designer glasses names. You can choose the glasses frame you like, and try on your lenses with your prescription, then you can get your total glasses prices. The bidding begins. If the glasses is about $60. You can tell the store owner that you know a friend who had paid 30. If the owner offer you $50. You can go up to $40. I am sure you can settle on $45.
Next, a machine will test your prescription, and the glasses store will make the prescription glasses for you.