Recent papers have taken advantage of price variation cre - ated by the Massachusetts reform to estimate price elasticities,though the context has typically been the choice across plans,not the choice to take-up insurance at all. 10 These studies have tended to show that consumers are very price - sensitive. Ericson and Starc (2012) use the fact that premium prices can vary sharplyas individuals cross five-year age brackets in the MassachusettsConnector (the name given to the private insurance exchange cre-ated by the reform) and estimate elasticities substantially greater(in absolute value) than −1.0.11Chan and Gruber (2010) usepolicy-driven changes in the premium prices in the Massachusetts’Commonwealth Care (the state’s program for residents withincomes below 300 percent of the poverty line). They estimate price elasticities of −0.65, and slightly higher estimates for new enrolleesthan for continuing enrollees.