extra discount meaning in English

额外折扣

The extra discount amount can rise based on the number of units ordered
附加的折扣额度会基于订购的单位数量增加。
The margin on this order is very small and we hope you will allow us an extra discount of 5 %
本定单利润甚微，盼贵方惠予额外5 %折扣。
Customer : i like blue ones better than black ones . can you give me an extra discount
顾客:与黑色的相比，我更喜欢蓝色的。您能给我再打点折吗？
And shopping for presents is a dream during the winter sales , when many shops and restaurants offer extra discounts and special deals for visitors
为挚爱亲朋选购圣诞礼物，就要把握冬季大减价的良机了除了一般折扣优惠之外，访港旅客更往往可