DirecTV is currently offering all of its premium channels, namely Max, Showtime, Starz, MGM+, and Cinemax, free for three months if you add them to any of DirecTV's live TV packages, which start at $65/month. This is a significant deal, considering the mentioned channels have recently raised their prices, so they're now $16/month, $11/month, $12/month, and $6/month, respectively. In case the channels aren't up to scratch, you can always discontinue them as add-ons before the free trial ends. Otherwise, DirecTV auto-renews your account and charges you at those monthly prices. 

Though DirecTV's packages differ in the kind and amount of channels they offer (more expensive tiers include RSNs, specialty sports channels, and even more premium content), all packages include local channels, cloud DVR, and unlimited simultaneous screens. The service is also regularly offering all sorts of discounts, which you can check on their "deals" page.