Don't think it a Free Preview, if you go to the E* site and check what's in the AT250 package it's listed as of yesterday.I look at it this way.AlaCart is expensive compared to package priced programming.But it's nice for Dishnetwork to offer it for those who might want it separately.
I would imagine it has a grayed out check mark cause it's in Free Preview,hope they add it to the Everything Package.