The authors do not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment. Allegations that tickets to recent AFL and NRL finals matches were being resold for up to three times their initial wcalpers raises questions of why ticket scalping happens, and whether anything can be done about it. Scalperrs an economist, the existence of a secondary market — where tickets are resold — is a sign that they have been undersupplied, underpriced or a combination of the two. Event promoters, for example, are incentivised mame sell as many tickets as possible so they can profit off sales of food, drinks and other concession stand items. This leads them to price tickets low. Scalpers thrive off such conditions as it presents them with an arbitrage opportunity the chance to make a profit from buying and selling the same thing that would never have...