Consumer buying behaviour is an art and science of knowing needs and wants of consumers, and developing an understanding how prospective buyers decide to spend their resources like time, money and efforts during different stages of buying process. Buyer behaviour includes the acts of individuals directly involved in obtaining and using economic goods & services including the sequence of decision process that precede and determine these actions. Actual purchase is only a part of the decision process. In buyer behaviour we consider not only why, how and what people buy but other facts such as where, how often and under what conditions the purchase is made. An understanding of buyer behaviour is essential in marketing planning and programmes. Though urban and semi urban consumers are living in arm length distance, their attitude and perceptions are different on the merchandise they buy. There are many reasons that divide the urban ones from the semi urban. Organized retailing is changing the whole concept of shopping, creating a radical shift in consumer buying behavior.