I'd rather pay for 7 c4.large* instances ($.70/hour for all of them) compared to an x1 ($13.38/hour). *The original article is from 2014 and references c1.medi

I'd rather pay for 7 c4.large* instances ($.70/hour for all of them) compared to an x1 ($13.38/hour). *The original article is from 2014 and references c1.medium which are no longer available. c4.large is the closest you can get without dipping down into the t2 class.