Residential natural gas customers in the United States face volumetric charges that average about 30 percent more than the marginal cost of gas. This inefficient departure from marginal cost pricing allows gas utilities to cover their fixed infrastructure and operating costs. Proposals for...

Many recent class-action antitrust lawsuits have been settled with discount contracts in which the defendants agree to sell to the plaintiffs in the future at a discount off of the retail price charged to other buyers. The sellers can offset such discounts, however, by increasing the retail...