This paper addresses the critical factors of customer satisfaction between department store which is characterized as a good service quality and discount store which has a competitive advantage on price dimension. The result showed that overall satisfaction of department store was slightly higher than that of discount store. Also, it was found that only service quality was a good indicator as a customer satisfaction of department store. However, overall satisfaction of discount store was significantly affected by both price and service quality. The study contributes to our understanding of how department store and discount store develop KSFs(key success factors) of customer satisfaction.