This answer is courtesy of our partners at the Global Literacy Project: There are already tablets on the market for as low as $40 each without cellular capability. Based on the availability of inexpensive and reliable tablets, we estimate our cost to drop to approximately $60-70 per child. Assuming a tablet’s lifespan of three years, our cost per child per year could be as low as $20-25. Since the bulk of the cost of deployment is the device itself, economic pressures and new manufacturing techniques may continue to drive the cost down even further. Currently, even the most impoverished countries are spending close to $100 per child per year to try and reach these populations with some sort of educational experience. As we move into Phase 3 and the deployment number rises to 10s of millions (then to 100s of millions) of users, the cost of maintaining and supporting the core platform (data collection and analysis, server backends, integration of new content, community support, …) is amortized across a large population. Even with an annual operating budget of $10-20 million / year, the cost per child would be pennies. (Note that Wikipedia has a $20 million /year budget.)