This study examines the relative effect of two types of scarcity messages (limited-quantity and limited-time) on consumers' purchase intentions. The moderating influence of brand concept (functional or symbolic) on this relationship is also examined. Drawing on the results of two studies, the authors conclude that the limited-quantity messages are more effective than limited-time messages in influencing consumers' purchase intentions. This differential impact is further enhanced for symbolic brands. Consumer competition is found to mediate the effect of scarcity messages on purchase intentions.