 All of 6 seasons are available for purchase through the Amazon Prime video on demand service.During the show's first run, merchandise including novels, records, and board games was generated for the juvenile market.With the show's renaissance in popularity decades later, merchandise produced was aimed toward the adult babyboomer/nostalgia collectors market and included pinback buttons, clocks, greeting cards, calendars, non-fiction books about the show's production, memoirs, and miscellaneous items.