We consider an oligopolistic market where firms compete in price and quality and where consumers are heterogeneous in knowledge: some consumers know both the prices and quality of the products offered, some know only the prices and some know neither. We show that two types of signalling...

Despite intense price competition firms obfuscate product information when it is relatively costless to reveal, contrary to neoclassical predictions. This paper considers whether firms can profitably conceal (part of) their prices for a homogeneous product when consumers differ in their ability...

In e-commerce platforms, consumers rely heavily on product reviews, sales volume, and number of product page visits to infer product quality. The past decade witnessed an explosive growth of seller-initiated quality misrepresentation by using fake reviews, fake sales volume, and fake clicks to...