  We consider a simple decision model in which a set of agents randomly choose
one of two competing shops selling the same perishable products (typically
food). The satisfaction of agents with respect to a given store is related to
the freshness of the previously bought products. Agents select with a higher
probability the store they are most satisfied with. Studying the model from a
statistical physics perspective, both through numerical simulations and
mean-field analytical methods, we find a rich behaviour with continuous and
discontinuous phase transitions between a symmetric phase where both stores
maintain the same level of activity, and a phase with broken symmetry where one
of the two shops attracts more customers than the other.
