That's because you can't pay for individual movies on Netflix and keep them as a perpetual license. You can, on Amazon, so it makes sense here to say, "On Amazo

That's because you can't pay for individual movies on Netflix and keep them as a perpetual license. You can, on Amazon, so it makes sense here to say, "On Amazon Prime for free" as opposed to "You can purchase a perpetual license to download or stream the movie on Amazon or iTunes."