我们如何对您的订单应用促销
无论原始订单被拆分为多少个子订单，我们都会对原始订单小计应用所有促销折扣。
例如，如果买家小计金额为 100.00 美元的订单同时获得了 5% 和 15% 的折扣，我们会按照以下方式计算总折扣金额：
| 订单小计 | 折扣类型 | 总折扣金额 | 小计 | |
|---|---|---|---|---|
| 100.00 美元 | 折扣 1 | 5% 折扣 | 5.00 美元 | |
| 折扣 2 | 15% 折扣 | 15.00 美元 | ||
| 20.00 美元 | 80.00 美元 |
买家可能会将其订单拆分为子订单，或者,其订单在结账时可能被亚马逊拆分成多个货件。在这些情况下，我们仍会依据原始订单小计在此金额之上应用促销。
一些混合促销规则会对优惠码促销的实现方式产生影响。要了解更多信息，请参阅优惠码和混合促销。
亚马逊官网原文详情：
How we apply promotions to your orders
We apply all promotional discounts to the original order subtotal, regardless of how many sub-orders the original order is split into.
For example, if a buyer receives both a 5% discount and a 15% discount on a $100.00 order subtotal, we calculate the total discount as follows:
Order subtotal Discount type Discount total Subtotal $100.00 Discount 1 5% off $5.00 Discount 2 15% off $15.00 $20.00 $80.00
Buyers may want to split their orders into sub-orders, or their orders might get split into multiple shipments by Amazon at the checkout. In these cases, we still look at the original order subtotal and apply the promotion over this amount.There are combinability rules that affect how promotions with claim codes are applied. For more information, see Claim Codes and Combinability.
文章来源：亚马逊官方网站
