If you watch a lot of DVDs, get an online DVD store membership.
Membership to online movie stores like Netflix can save you a lot of money compared to buying DVDs or renting it from a local store.
You need to wait once you order the movie, but if you watch a lot of movies at home, then you can easily get into the habit of ordering ahead of time so you always have something at home.
If you are patient and your library has the resources, check to see if they have a movie section.
You won’t get anything very new, but they are free.