I was told by an installer that it would cost me $500 to install my Small dog door. I thought this was way above prices, from what my friends told me. Then I remember, they see little old lady, so they feel we have to give in. They should talk to old people to see if they are actually capable of doing it ourselves. Some of us have a background that taught us to do just about anything, and every thing. Watched your video and feel it's really very simple, Thank you!!