Well, generally speaking, the prices of this kind of sunglasses are kind of high, especially when you get them from the official stores. So I will suggest you buy them on online shop. For example, you can buy them at http://clothing-and-accessories.become.com/jimmy-choo-anouk-shield-sunglasses-black--compare-prices--sc1503312739. In this place, they can provide you many different kinds of products what you like and you can just pick one pair depending on your own needs. For example, you just need pay about 350 dollars to buy them. Also, you can buy them spray which can be good to protect your sunglasses. Besides, you should know that they are UV protected, so that they can shield your eyes from the bright sunshine and avoid the UV rays. Anyway, you can jus have a try.