Originally Posted by notorious
I was thinking about the amount of money that will needed to keep a Mars colony sustained.
Yeah you know supplies would be an extreme amount of money until they get vegetation growing. Assuming most things, if not all, would be powered through a type of kenetic energy solar and wind and probably even piezoelectric energy cells. Those things will be extreme expensive as well but once the initial setup is built and they get some vegetation growing the price would be insignificant. The science that is to be gained could even help to offset the initial costs.