And best of all, from the viewpoint of the bottom line polli-bricks cost much less to manufacture than other building materials. They cost out at about NT $ 3600 – 4000 per square meter, whereas a curtain wall of comparable specifications made of glass would need around NT $ 20 – 30,000, yet would be only one-quarter as effective at keeping out external heat.
更具「儉樸」優勢的是，相較於一般建材，寶特瓶磚的產製成本低廉許多，它每平方公尺的造價約新台幣 3,600 元～4,000 元，而同等規格的玻璃帷幕牆則高達 2 萬～3 萬元，但其隔熱效果卻僅為寶特瓶磚的 1/4。