As a machine shop owner or machinist, When you pay for Manpower charges, health care, insurance, power, plant charges and lots of things, it means time is worth more than gold, therefore, making more parts in any working shifts should be our initial target.
All in all, do not put a Tooling charge in perspective and use cheap cutting tools for decreasing cost per part because you will lose your money or time with low cutting parameters, tool change costs, down time cost, not trustable machining process and not uniform quality.