Without labor there will be no product so one can argue that is where the value of an item comes from. With that said, and as an example, for a company to manufacture memory chips and CPU's which go into electronics that drive all man-made moving stuff on earth, they have to acquire certain precious metals from earth, metals like Gold, Palladium, Silver and Platinum. Another individual can then argue if these metals aren't available, then there is no product to be made for electronics. Labor wouldn't be in the picture if these starting materials aren't available.
I am just pointing out all arguments are legitimate for price setting, some more important than ithers of course.