It is widely recognized that promotions enhance product sales. Other factors such as seasonality, special days, customer preferences and economic factors may also have an impact on demand. Yet, endeavours to model the dependency of demand on various factors are scarce. We develop a conceptual...

In recent years, promotions have become a common practice in many retail outlets. Usually these promotions are planned collaboratively by manufacturers and retailers, who jointly agree on the products on promotion, the types of promotions, the price reduction and the timing of promotions. But,...