單件7折/五件6折使用[85折售價]*折扣 折扣顯示於最後結帳畫面EX:(85折售價)0.85*折扣0.83=0.7(7折)(85折售價)0.85*折扣0.71=0.6(6折) ($250(含)以下商品為特價商品 折扣同上)
