The final price paid by coal consumers is even higher , as the cost of shipping coal and other raw materials has tripled in the past year due to china ' s rapacious demand for energy , metals and agricultural products , with european coal import prices closer to $ 70 a tonne 煤炭消费者支付的最终价格还要高,原因在于,过去一年中,由于中国对能源、金属和农产品需求庞大,导致煤炭等原材料的运输成本增加了两倍;欧洲的煤炭进口价已近每吨70美元。