Determine if you would like to have a storefront, sell your sunglasses online, or both. If you choose to sell at a physical location, start-up costs may be required. Decide if you would like to lease a building, a kiosk in the mall or space at a flea market. It depends on how much inventory you plan on carrying. If you choose to sell your sunglasses online, overhead will be lower and your only concern will be establishing a website to showcase your sunglasses.

Begin searching for a supplier. Determine what brands of sunglasses you will sale. Will you sell pricier sunglasses by designers like Dolce and Gabbana, Louis Vuitton, and Gucci? Will you also sell sunglasses that are more affordable? Both? Finding a supplier can be challenging--there are some suppliers that sell replicas. Check referrals and company backgrounds. The best method of purchasing your sunglasses is to go to the source. If you want to sell authentic Gucci sunglasses, contact Gucci directly to learn how to be a wholesaler or distributor.

Seek the assistance of a certified public accountant or lawyer to legally establish your business. You can set up a corporation, an LLC or a sole proprietorship. You will need to have a business established so you can set up a merchant account. If you plan on accepting credit cards, a merchant account is needed to process them. E-commerce sites can be expensive to create but there are sites like Yahoo Small Business or eBay that allow you to set up stores or on their site using templates.

Decide who your target market will be. Advertise in locations where your clients are most likely to frequent. Consider marketing in states that may have a tropical or warmer climate year-round like Florida and California.