I've witnessed some hard negotiating in the car industry about the price of a cable lug for a 6-figure luxury car. The car maker wanted to bring down the price

I've witnessed some hard negotiating in the car industry about the price of a cable lug for a 6-figure luxury car. The car maker wanted to bring down the price for one lug from 0.05 Euro to 0.03 Euro at a order volume of about 100.000 pieces. This kept about 50 people (on both sides of the deal) busy for 3 months: Engineers, CAD-Ops, Buyers, Sales, Project Managers... It was obvious that the amount of extra-work to see if the price could be lowered was a multiple of the savings of the car maker. Yet nobody complained.