Will port to other supported services via Movies Anywhere: VUDU (in 4K), Google Play/YouTube (in HD), Amazon (in HD), FandangoNOW (in 4K), and Microsoft Movies & TV (in HD).
Reminder: supported Roku and Amazon Fire TV devices now have the Apple TV app to access/watch these iTunes purchases.
Alternatively: Amazon [amazon.com]
(Digital HD) $4.99
Check your No Rush Shipping credits [amazon.com]