<prompt> Translate the following text to EnglishHata hivyo, mara moja ama kiasi kikubwa au wiani mkubwa ni kupatikana, fursa kwa ajili ya mapungufu zaidi katika wastani wa gharama za kitengo kwa ongezeko ama katika kiasi au wiani ni ndogo.  <response>: However, once either high volume or high density is achieved, the opportunities for further reductions in average unit costs by increases in either volume or density are minimal. 