There is also the issue of the so-called reserve price (the highest price a buyer is willing to pay for a good or service). The reserve price places a cap on how high commodity prices will go, as it is the price at which demand destruction occurs (consumers are no longer willing or able to purchase the good or service).
还有所谓的保留价格问题（保留价格是指买家原因为某商品和服务支付的最高价格）。保留价格决定了商品价格的上限，因为这一价格是需求毁灭的开端（消费者将开始不愿或无力购买商品和服务）。