This study examines the effect of providing or not providing millennial consumers with a supermarket suggested shopping list (SSSL). At the same time, it tests the effect of providing consumers with a large number of in-store promotions versus no promotions. The study also assesses the moderating effect of price concerns on both expenditure and the satisfaction attained after a shopping trip. The results of an experimental design with 240 subjects in a simulated supermarket setting show that SSSL users spend less, and that heavy supermarket promotions increase purchases. However, if an SSSL is provided while products are highly promoted, this decreases consumer satisfaction. Offering consumer promotions to millennials without providing an SSSL results in the highest level of store sales. Findings of this study will be of interest to retailers willing to offer a shopping list service to supermarket customers with the purpose of increasing loyalty.