Doesn CAD cost more than hand drawing?
Possibly. It really depends very much upon the complexity of the drawing and what you want to do with the output. A simple pencil or ink drawing can be very quick to set up and execute. However, the minute you need to make a small change you probably have to completely redraw the paper-based drawing, doubling the cost. Then the CAD drawing suddenly becomes cheaper. Modifications are easy and reprinting involves the touch of a button.
