Every time I search a movie I want to watch it is not available despite my prime membership. Most of the time Im searching for an old movie which you would think would be available but they never are regardless of the title and its age. I receive emails reminding me to make use of my prime membership for movies but the ones I want to see are not available. Why wouldnt movies from the 80s, 90s or early 2000s cost me money or not be available?