Amazon charged more for running HVM than for PV images The issue was that older instance types (now known as "Previous Generation instances") didn't support HV

Amazon charged more for running HVM than for PV images The issue was that older instance types (now known as "Previous Generation instances") didn't support HVM for "unix" images, so FreeBSD had to pretend to be Windows -- which meant that you had to pay for a Windows license you weren't using. All of the instance types introduced since 2010 have supported HVM "unix" instances, and as of a few months ago all of the older instance types have been officially deprecated.