Which is less expensive Amazon or selfhosted

Charlie Oppenheimer may be a fan of Amazon Web Services.

But, as he explains here, he's long felt that the economics of the choice between self-hosted and cloud provider had more texture to it than the patently attractive sounding 10 cents an hour."

Source:
http://gigaom.com/2012/02/11/which-is-less-expensive-amazon-or-self-hosted/