This paper introduces the Werden-Froeb Index (WFI) to assist in evaluating merger-specific efficiencies in horizontal mergers. The index measures the weighted average reduction in marginal costs required to restore pre-merger equilibrium prices and quantities after the (full or partial) merger...

Much attention has been paid to the influence of the institutional form of waste collection on costs. We extend this literature in three directions by including the unit-based pricing system. First, we show that unit-based pricing systems are more important from a cost-minimizing point of view...

Should education be subsidized for the purpose of redistribution? The usual argument against subsidies to education above the primary level is that the rich take up most education, so a subsidy would increase inequality. We show that there is a counteracting effect: an increase in the stock of...