Prime, like all other services gets rotated. I will be cancelling Prime and probably not renewing for the next 6 months to a year. I just ordered a years worth of non-perishable items so I can do just that.
On several products that I buy, Prime cost more than buying the product w/o Prime. Sometimes the Prime shipping out performs the normal shipping, but usually, the products I buy arrive either the same day or maybe a day later. "Meh..." is appropriate.
On the video offering, I'd like a big 'ol patented Amazon "Prime Only" button that persists my choice when clicked. Amazon has gotten somewhat better with identifying shows that are NOT Prime friendly, much better than they used to be. However; don't advertise a series as "Free with Prime" and then want payment for episodes 4 through the end of the series. Same with multiyear series. Either put all seasons/episodes on Prime or mark them clearly as "Ads/Hooks/Draws".