Few people care what material the gas pump they use is made out of as long as it gets fuel into the car. Brass is a popular material that can handle the corrosive nature of both gasoline and harsh environments. Gas stations next to the ocean are jut as likely to use brass gas pump nozzles as convenience stores much further inland.
Brass is an attractive metal, but most brass gas pump nozzles are not highly polished. Some models make it difficult to tell what metal the nozzle is actually made out of. How polished the model that ends up on a business’s pumps is depends on the tastes of the store designers, engineers, and the person who makes the purchasing decisions. Do not neglect the functional aspects of these nozzles, as they are the most important feature.