As the most recent outbreak of Ebola virus disease (EVD) in West Africa continues to grow since its initial recognition as a Public Health Emergency of International Concern, an unanswered question is what is the cost of a case of Ebola? Understanding this cost will help decision makers better understand the impact of each case of EVD, benchmark this against that of other diseases, prioritize which cases may require response, and begin to estimate the cost of Ebola outbreaks. To date, the scientific literature has not characterized this cost per case. Therefore, we developed a mathematical model to estimate the cost of an EVD case from the provider and societal perspectives in the three most affected countries of Guinea, Liberia, and Sierra Leone. Our model estimates the total societal cost of an EVD case with full recovery ranges from $480 to $912, while that of an EVD case not surviving ranges from $5929 to $18 929, varying by age and country. Therefore, as of 10 December 2014, the estimated total societal costs of all reported EVD cases in these three countries range from $82 to potentially over $356 million.