Running the prison camp costs the Pentagon more than $150 million a year – just over $900,000 for each of the 166 detainees at the facility, located on a Navy base on the eastern end of Cuba. By comparison, costs for a typical federal prison inmate run about $25,000 a year; at the “supermax” prison in Colorado that holds domestic terrorists Eric Rudolph and Ted Kaczynski, it’s about $60,000.