If you like to watch Amazon Video Prime on your Mac, you don’t necessarily have to do it in the browser anymore.
Amazon has provided its own macOS app for using its own video service. Although it is based on the iOS app, it has been adapted to the Mac with a lot of intelligence and is very usable. You can browse through the catalog, download videos or stream them via AirPlay.
If you do not yet have a video subscription from Amazon, you can download the app first and browse through the videos to see if there is anything interesting that might motivate you to subscribe.