You can have a look at http://www.firmoo.com/wrap-around-rx-sunglasses.html. There are many cheap prescription sunglasses. But all of them are with UV protection. You can consult the online customer services to know more about their products. But no matter which website you will choose to buy a pair of sunglasses in the end, the sunglasses are better with 100% UV protection because that kind of sunglasses can protect your eyes and prevent your eyes from developing many kinds of eye disease such as cataracts or macular degeneration that result from too much exposure to harmful UV rays.
Dude, you can have a look at http://www.framesdirect.com/prescription-sunglasses/. There are many famous eyeglasses brands such as Gucci, Polo, and so on. You can click the brand on the following list if you have any interest in the brand. But I think they are a little expensive for most of us. But definitely they will have better quality as well as services. Hope this helped!
You can go to Lenscrafters. They can adjust the lens according to your prescriptions. And the prices will be much cheaper than the sunglasses of famous brands. Besides, they also do free eye check up. So this can save you a lot of money. Hope this helped! Good luck!