We consider the following sequential allocation process. A benevolent central authority has to allocate a set of indivisible goods to a set of agents whose preferences it is totally ignorant of. We consider the process of allocating objects one after the other by designating an agent and asking her to pick one of the objects among those that remain. The problem consists in choosing the “best” s...

The last decade has seen the advent and growth of two strongly linked phenomena which have led to important changes in the worldwide economy. The first is the development of the digital economy, based on the digitalisation of previously existing goods and on the development of new purely digital goods. The second is the development and generalisation of consumer piracy. The link between these t...

A benevolent central authority has to allocate a set of indivisible to a set of agents whose preferences it is totally ignorant of. We consider the process of allocating objects one after the other by designating an agent and asking her to pick one of the objects among those that remain. The problem consists in choosing the “best” sequence of agents, according to some optimality criterion. We a...

Empirical studies show that tradable consumption goods are more expensive in rich countries. This paper proposes a simple yet novel explanation for this apparent failure of the law of one price: Consumers’ utility from tradable goods depends on their consumption of complementary goods and services. Monopolistically competitive firms charge higher prices in countries with more complementary good...

The global market for virtual items, characters and currencies was estimated to exceed 2.1 Billion USD in 2007. Selling virtual goods for real money is an increasingly common revenue model not only for online games and virtual worlds, but for social networking sites and other mainstream online services as well. What drives consumer spending on virtual items is an increasingly relevant question,...

Virtual Worlds have become serious business models and thus gained the attention of law professionals. The legal problems arising out of Virtual Worlds have started a discussion which will be summarized in this article. Moreover arguments will be delivered which can be used to protect users of those Virtual Realities.

Economic agents have the possibility to fund the protection of environmental public goods, such as natural ecosystems and biodiversity, facing unknown risks of collapse, which could help to back them up. On the base of the prediction markets, which meet with a degree of success since their introduction, we propose an evolutionary model of an option fund market for the threshold environmental pu...

We introduce classes of utility functions and production sets, called Leontief-free, which are applicable when goods are substitutes and utilities/production are sub-additive (to model intergood satiation). When goods are complements, the well studied Leontief utility functions do an adequate job; however, to the best of our knowledge, a similar concept for the case of goods that are substitute...

This note characterizes the optimal base for commodity taxation in the presence of administrative fixed costs varying across goods. For low tax rates, the optimal base only comprises commodities whose discouragement index is greater than the ratio of their administrative costs to the tax they yield. An illustration with UK data shows that a category of goods should be taxed only if the revenue ...

This paper examines competition between firms that produce legal information goods and host sites that index P2P links. Specifically, we develop a simple model in which a legal firm determines price for its information good and a P2P host site decides on its investment to improve the quality and accessibility of the information goods linked to its site for free download. In the analysis, users ...