Miguel didn't dive deep into cost calculations during his TEDxBuenosAires talk, but this seems like awfully low numbers. I am curious to see how they are controlling the costs - perhaps Internet access is affordable due to a competitive marketplace (wish we had one of those in the States) or existing subsidies for educational access. Do these costs include Ministry-level overhead and teacher training, or have those been rolled into existing budgets? I wonder not so much as a criticism of their cost calculations - clearly CEIBAL is a shining star in both OLPC distributions and educational technology projects - but rather as a best-practices interest.