Go to Amazon.com and select Prime Video from the search dropdown, or go directly to the Prime Video tab. Select: Search for the movie you want.
This is the most reliable method as it avoids app-store restrictions. how to buy movies on amazon instant video
Amazon uses your 1-Click Payment settings. Ensure your credit card or Amazon gift card balance is up to date before clicking buy. Go to Amazon
Launch the Prime Video app on your Roku, Fire TV, or Smart TV. Find Movie: Use the search icon or browse the "Store" tab. Amazon uses your 1-Click Payment settings
Due to Apple’s commission fees, you cannot buy movies directly inside the Prime Video app. You must open Safari or Chrome , log into Amazon.com, purchase the movie there, and then return to the app to watch it. Important Things to Know
Select the movie and click the Buy button. You may be asked to enter a "Purchase PIN" if you have parental controls set up. 3. Buying on Mobile Devices (iOS and Android)
Renting gives you 30 days to start watching and 48 hours to finish once you’ve hit play. Buying gives you "indefinite" access as long as you have your Amazon account.