Youtube is the largest videos sharing site with 300 hours of video are uploaded to YouTube every minute.
Youtube had a movies buying and renting services. But it’s not available in 2017.
The best place to buy and rent movies is Amazon.com.
Here you will find a lot of movies to buy or for rent.
For Amazon coupons, you can visit: https://www.groupon.com
Groupon is the leading coupon website. There you will find thousands of companies coupon or discount code.
So for now you can visit amazon.com for any kind of movies online. There are over 150k movies. You can search movies by genre, by there name, price etc.