Pull out your $ 3500 camera with the $ 2200 lens and turn on the $ 3000 studio lights and press the button. Then feed the file into the $ 2500 computer and the $ 2000 printer and add a $ 2 sheet of paper.
$ 13,202 later and there you are - a lovely A4 picture to frame.
But wait - you have forgotten that your portrait sitter has nothing to sit on. It is discourteous to tell them to sit on the floor or an old apple crate - you need to provide some better way of supporting them. Enter the posing stool from Promaster - adjustable up and down and 5-legged so that they do not tip over if you ask them to lean to the side. Black so tat it does not intrude visually into the composition - padded so that it does not intrude anatomically into the customer.
A justifiable expense for the studio and a valuable piece of furniture. And chicken feed compared to the rest of the costs.