If you like pepper flakes for cooking or pizza or other toppings why not make your own. If you grow your own peppers it could save you some money and its a good way to preserve your peppers for use later. Old world garden farms has instructions for drying and then flaking and if you wish to make a chili powder they also tell you how to powder the flakes. Nice article for preserving your peppers while making your own spices out of them.
Making Your Own Hot Pepper Flakes