I've been to see Dr. Harper twice and both times I've been very happy with their service. It's obvious that the Doc has been practicing for many years. The first time I went, I had no pain but was very tight in my neck and down my spine. They used heat, ultrasound and vibration and I still didn't adjust very much. So the Doc said he wanted to see me again within a week for a follow up adjustment (which I would already have done) and the second time I wasn't even charged. And $25 a visit? That's a nice price! I will definitely see them again! By the way, yes, they're by appointment only, but my boyfriend goes there and always calls last minute. He gets in every time.