Good catch on the cc2.8xlarge disk -- thanks! As for the GB/$: by default we display prices assuming you'll use the server 24 hours a day for one month. That m

Good catch on the cc2.8xlarge disk -- thanks! As for the GB/$: by default we display prices assuming you'll use the server 24 hours a day for one month. That means that if you take a reservation, you'll be reselling it a month later. It turns out that a 1-year light reservation is best here (assuming you can resell for the full pro-rated value): with a heavy reservation Amazon's 10% cut on the resale is too expensive, whereas with no reservation the hourly rate kills you.