Sunglass huts are not a bad place to look for shades, you can normally find sunglass huts at your local mall, and often at flea markets and trade shows you will also find them. People who own Sunglasses huts normally buy their sunglasses in large quanities, and because of this get a price break.
Sunglass huts are very popular in the south, during the summer months when people are there and during Spring Break, you will see many vendors who own Sunglass huts, they are very profitable. You can own one yourself and start your own business, the first step is finding someone who can supply you with good wholesale sunglasses, and then you have to find the hut itself, a good place to look is ebay for someone selling a used one.
Sunglass huts may not have the most fashionable or a designer name pair of sunglasses, but what they offer is better then nothing if you are in need of a pair of sunglasses real fast, and they are the only one selling sunglasses on the beach!