I had bought one that wasn't used, but opened up and then returned. It was just 50.00, plus shipping. Well it was missing screws to keep it propped up. I wrote them and wanted to return it, but they wanted pictures? How do you take pics of no screws? So I found a screw from a friend, so it works, but it doesn't go as high as I would of wanted. Great idea, but to many stipulations to return.