Article15 Tenderers shall not submit tenders in collusion with one another to force the tender price up or down. 第十五条投标者不得串通投标，抬高标价或者压低标价。
Many are volunteering on-the-spot discounts and even letting customers haggle prices well down from what's marked in a desperate bid to make the cash register ring. 许多零售商主动地推出了当场打折，甚至让顾客把价格还到大大低于标价的位置，来拼命地让收银机发出响声。
