The Marketing of on Demand Movies

When we are searching for movies whether it be on demand, or at red box what makes us choose the movie we choose? I know for me, by the time I actually reach a decision I've spent quite a while debating which ones look good, and which ones will satisfy my search. Some factors that may play an important part are, the cover of the DVD, the overview of the movie, and the previews that are viewed before purchase. Usually people will be drawn to less "cheesy" looking covers because they often times are seen as bad movies. People have a job to make the movie seem appealing so that people will watch the movie. If this job is not done, viewers will be detracted from the movie due to the bad exterior looks and the preview that is shown.

Have you ever noticed what persuades you to purchase a certain movie? Are you more drawn to better, more detailed cover art over messy and unnatractive covers?