The primary purpose of studying consumer behavior is to understand why and how consumers make their purchase decisions. In all marketing decision making, it is relevant and important for any business to understand the consumer and his buying behavior. It is also important for any business to understand the consumer and his buying behavior. It is also important to understand how buying decisions are taken, as marketing starts with the analysis of consumer behavior. To gain a better understanding of the complex buying behavior, the marketers need to take the cues from the various disciplines, such as economics, psychological factors. The consumer behavior models describe to decision making or choice processes of consumer knowledge and how individuals and family units make consumption decision.