The price is a bit high, but the iPad was not cheap. I think it says about 10% of the equipment price is equivalent to what you spend for the common case.
The only thing that bothers me so much, however: A fixation is just above the charging socket! There is so much space and to set up everything from after the iPad. This must not happen. Thus, you have to constantly take out the device for the charging process because a "push" by the sedentary fit is not possible. It was not pointed out that in the description, a point deduction.