Granted, it’s still cheaper to buy a digital mov

Granted, it’s still cheaper to buy a digital movie in 4K than it is to take a family of four (or even two people) to a movie still in theaters. But if you’re a big fan of renting, the cost difference can be initially jarring. The one exception is UltraFlix, which regularly features 4K catalog rentals like Robocop for just $2.99. Unfortunately, its catalog is limited.