A firm may allow customers to learn the value of its product prior to buying it. This increases their willingness to pay, even though it also leads some not to buy. That strategy may also be used as a competitive tool to increase its product's attractiveness. This paper examines competition...

Market gardening has been increasing fast in Senegal. But farmers face high marketing risks: daily price fluctuations exceed an average 20% for some products, seasonality is strong, anticipation based on prices leads to cyclic movements. Farmers and market operators have found various forms of...