We had a RedBox at work. When they install the unit the retailer receives a book with info and contact numbers in it. They dial into the box by satellite to see how full it is, how many returns are in it etc. If it is full before they are scheduled to arrive the retailer can call them and they will come empty it. They are usually very good about the maintenance. The only time we ever had trouble was when someone didn't clean the snow off the top and they couldnt establish a connection to the box. They are becoming so popular because they are profitable to the businesss. I cant remember the exact figure but I it was around $5000 a year we made just for having it sit on our property.