Amazon now has its own free streaming channel on Amazon Prime called IMDb FREEDIVE with ads. It's also on Roku devices.
You have to have prime?
No, according to the link below.
But you have to have a fire stick? No app or website?
Fire Stick:
Yellow icon that says Freedive. Or you can scroll down the Fire Stick home page to about the 23rd row to find the Freedive offerings.
Roku:
Install Prime Video channel, even if you don't have Prime. Scroll to about the 16th row to find Freedive offerings.
Smartphone:
Install Prime Video app and scroll to approximately the 16th row for Freedive videos.
Computer:
Navigate to www.imdb.com/freedive
Website does not yet work with mobile browsers.