return button (button on your web site)
for faster shipping to your customer.
other wise your customer has to wait 1 week for the next Q. 3 days one way 3 days return + weekend no usps.
Occationally your customer will find this helpfull when their schedule is busy. and wants more time for the montly rental. this will release them from time pressure and give them few days head start on there busy schedule and still have time to watch the movies.
1 month=4 weeks - 1 week shipping = only 3 weeks