I just spoke with a rep too. No individual game tickets (or group tickets set aside) for IND, NE*, NYG, CIN, MIA, DAL, except for club seats starts at $179. So there are only some remaining for NYJ and HOU.
For what it's worth, season tickets can still be purchased together in chunks of up to at least eight seats together. (I asked if there were chunks of eight still available, or if there are only single seats.)