Sky Store - Why are some movies available in the preview? Every week we offer different films for purchase in a "preview" before we offer them for rent. When you buy a movie, you can find it in "My Library" and watch it as often as you like. Related articles Sky Store - Is the image quality identical to the trailer/movie preview and the movie itself? Sky Store - Which series do you offer? Sky Store - What is the difference between renting and buying movies when streaming online? Sky Store - Which movies are available? Sky Show - What content is available on Sky Show?