Consumer choice of differentiated products, such as wine, depends on the composition of the choice set consumers are choosing from. However, choice sets are often situationally defined through wine-tasting lists or displayed wines in a particular tasting and sales environment. In this paper, we use an experiment to explicitly modify the saliency of wine options available outside the tasting room choice set and the amount of sensory information available about the wines before wine tasting. We explicitly test whether consumer regret and fear of missing out on alternative options or consumer search costs are more likely to drive behavior around large choice sets. We find that increasing the saliency of outside options decreases one's propensity to taste the wines available for tasting and purchase immediately, while changing search costs through sensory descriptions does not affect tasting behavior. This provides support for the anticipated regret and fear of missing out motivations for behavior around large wine-tasting lists.
