This is just one, relatively small experiment. For comparison, the construction cost of ITER (which is still unfinished) are $14 billion so far. The US Fusion

This is just one, relatively small experiment. For comparison, the construction cost of ITER (which is still unfinished) are $14 billion so far. The US Fusion Energy Sciences program is over $400m a year (source: http://science.energy.gov/~/media/budget/pdf/sc-budget-request-to-congress/fy-2016/FY_2016_Office_of_Science-Overview.pdf http://science.energy.gov/~/media/budget/pdf/sc-budget-reque...).