Purpose - The main aim of this paper is to examine the role of brand reputation on the impact of value product on perceptions of a premium product from the same brand. As a secondary goal, it tests and extends existing findings from judgment tasks to a choice task. Design/methodology/approach - Two online experiments are presented. In Study 1 (1a and 1b), participants provided quality and price judgments to products. Brand reputation was manipulated by comparing common store brands to non-store brands (Study 1a) and to upscale store brands (Study 1b). In Study 2, we examined whether findings indicating a positive effect of a value store brand on a premium store brand extends to a choice context. Participants made choices between a premium store brand and a national brand in the presence of either a value store brand or a value national brand. Findings - It was found that brand reputation plays an important role in the interplay of products in line extensions. While the positive impact of a value brand on a premium brand is at its strongest level for a regular store brand, it still has a moderate size for a non-store brand without a defined reputation, as well as for an upscale store brand. Second, using a choice task, we reject an important rival explanation for the impact of a value store brand on a premium store brand observed in previous research. Research limitations/implications - The authors have focused on consumers expectations of products. While research has shown that these expectations play an important role in evaluations, future research may directly examine perceptions after consumption. The findings also offer an opportunity for future research to examine the differences in perceptions between store and non-store brands at different positioning levels, as well as other factors that affect brand reputation. Practical implications - The findings have two practical implications. First, our results indicate that when a manufacturer produces two products in the same category at different levels of quality, there is some benefit in letting consumers know about this relationship. The authors consistently found no negative impact on the brands and often a positive impact on the premium brand. While effects are stronger for common store brands, they are likely to emerge for any type of brand, albeit weaker.