Before be go any further, please note that in many countries, self defense products are controlled items and can only be sold or bought if you have authorized permits. While these products are designed for self-defense, their very nature makes them potentially dangerous in the hands of criminals too. Pepper sprays, for example, would allow petty criminals to momentarilly disable their victims while they rob them of their valuables. Check with your local authorities about local laws governing the sale and distribution of such products. Although there are thousands of cheap products in an already flooded market, finding your niche and proper marketing can give you the edge. You may find that approaching your market in a professional manner helps convince your customers that you are concerned first about their safety and then, only about making sales. Your role is an important one in today's society. There's big money in crime prevention these days!