When a concert or sporting event sells out, the performer appears popular and the venue enjoys the opportunity to maximize profits from the sale of parking, merchandise, food, and beverages. For these and other reasons, event sponsors often underprice tickets. This underpricing creates commercial opportunities for ticket resellers, who purchase in bulk at the lower price and resell the tickets at a profit, and also for intermediaries such as StubHub. Legal and technological efforts to squelch ticket resales have largely failed, leaving the secondary ticket market stronger than ever. This secondary ticket market is economically efficient, but it also creates winners and losers. Ticket resales irritate artists, who believe that greedy scalper...