shopify购物车合并折扣介绍
合并折扣
了解在购物车中应用多个折扣的影响。
组合百分比折扣和货币折扣
您可以应用以下折扣：
针对订单项、购物车或前两者的百分比折扣
针对订单项目、购物车或前两者的货币折扣
订单项目折扣和购物车折扣的组合。
如果您创建了一个合并折扣，则会首先应用货币订单项折扣，然后再应用百分比购物车折扣，如下所示：
产品原始价格 = 20.00
货币订单项折扣 = 5.00
产品价格（减去货币折扣）：20.00 - 5.00 = 15.00
百分比购物车折扣 = 10%
百分比折扣值：15.00 x 0.1 = 1.50
最终产品价格（减去所有折扣）：15.00 - 1.50 = 13.50
备注
如果您为您所在的地点启用了自动折扣，那么它们将覆盖应用于购物车或单个订单项目的所有折扣。您可以通过以下方式删除自动折扣：点击更多操作，然后在购物车修改符下，点击要禁用的折扣旁边的禁用适用于此购物车的折扣。此操作将仅禁用此交易的自动折扣。
Android 设备上不支持自动折扣。
销售多个数量的折扣商品
如果购物车包含多个某种产品，并且该产品具有货币订单产品折扣，则该折扣仅应用一次：
产品价格 =（数量 x 打折前的价格）-（货币折扣）
如果您想多次兑现订单项折扣，可以采用两种方式：
计算折扣的总额，并将该数字用作订单项目的折扣。
按百分比应用折扣。
Shopify商户官网原文详情：
Combining discounts
Learn about the effects of applying more than one discount in the cart.
Combine percentage and monetary discounts
You can apply the following discounts:
a percentage discount on a line item, on the cart, or on both
a monetary discount on a line item, on the cart, or on both
a combination of line-item discounts and one cart discount.
If you create a combination discount, then the monetary line-item discount is applied before the percentage cart discount, like this:
Original product price = 20.00
Monetary line-item discount = 5.00
Product price (less the monetary discount): 20.00 - 5.00 = 15.00
Percentage cart discount = 10%
Value of percentage discount: 15.00 x 0.1 = 1.50
Final product price (less all discounts): 15.00 - 1.50 = 13.50
Note
If you have automatic discounts enabled for your location, then they override any discounts that are applied to the cart or individual line items. You can remove an automatic discount by tapping More actions, and then under Cart modifiers, tap Disable for this cart next to the discount that you want to disable. This only disables the automatic discount for this transaction.
Automatic discounts are not available on Android devices.
Sell multiple quantities of a discounted item
If the cart contains multiple quantities of a product that attracts a monetary line-item discount, then the discount is applied only once:
Product Price = (Quantity x Pre-discount price) - (Monetary discount)
If you want to honor a line-item discount multiple times, then you have two options:
Calculate the sum of the discounts and use that figure as the line-item discount.
Apply the discount as a percentage instead.
文章内容来源：Shopify商户官方网站