I am a Canadian Prime member and we do not get movies with our membership.
But as a university student with a son in university, I am very conscious of the cost of text books. So far Amazon has had the best prices and knowing I will get it in 2 days, or have it shipped to my son in two days is worth the membership.
I was disappointed when I first got it. My son alerted me to the Prime Days back in July. I bought a Panini Grill and although we were assured 2 day shipping it took 6 weeks to arrive. I would have cancelled the order, but it was $30.00 less than I could buy it locally.