The ability to do all my billing in one place. The system is very user friendly and easy to navigate. I like that I can see my entire account at any given time. I dislike that I have to pay a monthly fee to use the system. I would recommend SmartPrice to others in the HVAC industry because of the user friendly system. It is easy to use and helps me see what I have billed and what I need to pay. I like that I can do all my billing in one place. It helps me keep track of my bills and helps me pay my bills at the end of each month.