Of course, that works out to 107.88 a year for just the video, vs. $99 a year for full Prime membership. In effect, you are paying about 7% interest for installment payments on a smaller package of benefits (which may be all you need) instead of cash up front. On the other hand, if you time a one month European vacation right, you do save with the monthly video only membership.
The stand-alone streaming service can be switched on and off. So its a great convenience and you can watch only when you want to.
Beats cable where you have to subscribe month to month whether there’s anything interesting on or not.