There's another discussion on this same topic
over here. You're looking at something that can only print the walls, and if you want windows and doors, you still need a person on site to add the lintels. You still need to start with a foundation and utilities, and after the print is done, you have to add plumbing, electrical, doors, windows, roof, trim, drywall, paint, flooring, etc. Also, concrete is more expensive than stick framing.