most spirulina products really cost much, but the spirulina filipina is not, because the one who owns the farm & laboratory is not after on what he earns, he wanted to provide he just wanted to provide good health to the people, and help those those suffering diseases. actually a box of 70 capsules/500mg only cost $20. it is cheaper than being confined for days in a hospital. and i have been using this and my family since 2010.