Update (8 Mar 2012): Amazon has changed their prices again. Let’s see what the math tells us now. These numbers assume you want to run a web site 24×7, using the Heavy Utilization pricing on Reserved instances: Small:Â ($195 + $0.016/hour * 8760 hours/year) / 12 months = $27.93 per month Large:Â ($780 + $0.064/hour * 8760 […]