This looks like a fixed cost per region, rather than a cost per instance. If so, it might actually end up being quite cost-efficient. "we add a $10/hour charge

This looks like a fixed cost per region, rather than a cost per instance. If so, it might actually end up being quite cost-efficient. "we add a $10/hour charge whenever you have at least one Dedicated Instance running in a Region. When figured as a per-instance cost, this charge will asymptotically approach $0 (per instance) for customers that run hundreds or thousands of instances"