Vaccine uptake protects individuals and societies, but how much is the COVID-19 vaccine worth? Joan Costa-Font (LSE), Caroline Rudisill, Sayward Harrison (University of South Carolina), and Luca Salmasi (Università Cattolica del Sacro Cuore) estimate that the willingness to pay for a COVID-19 vaccine in the US, UK, Spain, and Italy in July 2020 ranged between 100 and 200 US dollars. However, the social value of the vaccine exceeds its market value