I am clinic manager at a family practice doctor's office. Price varies on level of visit, but $120-180 is the norm.
What may seem very quick to you is not necessarily quick for the medical side of things. We still needed to staff a registration staff to take your phone calls, check you in, a nurse to get you roomed, the doctor has to review your chart prior to examining you, examine, you, pay the lab person to draw your blood, etc, etc.
I hear you and agree the cost of what we would think is a simply doctor's visit is not so.
I believe most clinics bill on something called a CPT code, if you are really wanting to compare clinics, ask for the charge for a 99213, which is what most clinic visits are billed at.