Hourly billed "bare-metal" cloud servers from Softlayer seem to be cheaper still: http://www.softlayer.com/cloudlayer/computing
Check out incero.com or securedservers.com for some perspective.
also serverbear.com is always great to check for price-performance comparisons, especially taking into account SSD performance.
I'm not sure how things work if you're a larger client with needs in the dozens of servers.