I got that AMI calendar the other day with my Futari BL kit from Fujita. I never paid them for it, but they sent it anyway, for whatever reason.
The calendar is OK, but it's really big, none of the artwork is new, and you have to tear off a sheet to get to the next month, more or less ruining the whole thing. Would have been nicer if it were a spiral-bound calendar where you could just flip the months over.