Shopping Cart Price Rules, as the name implies, are applied when the customer reaches the shopping cart. They can be enacted either with or without a coupon code, and include features not found in traditional coupon tools. To create Shopping Cart Price Rules go to Promotions -> Shopping Cart Price Rules and select Add New Rule.
Let’s start with creating a simple 10% coupon. We first enter a rule name and description. Once those are in we select Active for Status.
You then need to select which Website the coupon will be good for. In this case we want to give customers in all stores the benefit of the 10 percent off discount, so we select all options for the Websites and the customer groups. You select multiple items by holding Ctrl while selecting.
We are then going to make the Rule applied only with a coupon code, so we enter our code. If a code is not entered the rule will take effect once the customer reaches the cart without any action taken.
Now we have Uses Per Coupon and Uses Per Customer. In this case we want to create a sense of urgency, so the coupon can only be used 100 times. We then set the Users Per Customer to 1, so each customer will only be able to use the coupon once. We then enter the dates the coupon is valid for and select the priority of the coupon. In this case we keep the priority as 0, the highest priority. If you remember from the Catalog Price Rules, the priority is used when you have 2 Rules applying to the same products. The rule with the highest priority (lowest number) will take effect first. You can also decide whether or not each individual price rule will be made public in the price rules RSS feed that your customers can sign up for. We are going to skip Conditions and come back to it since we are creating a simple coupon here. If this is skipped, the coupon will apply to all carts where the coupon code is entered. The products in the cart will not need to meet any conditions. To complete this coupon we select Actions from the left navigation.
Select Percent of Product Price discount (the other options being Fixed amount discount, Fixed amount discount for whole cart, and Buy X get Y free) and enter the value you want to discount. In this case it is 10. We then want to enter a value for the maximum qty the discount will be applied to. Since we enter 5 here, the 6th product (must be the same item) will not have the discount applied, only the first 5 will receive the 10 percent discount.
The Discount Qty Step controls how often the discount is applied. If we were to enter 8 here, the 10 percent discount would only apply after 8 items are added to the cart. If more than 8 items were added to the cart, the discount would remain as 10% or 8 items, until 16 items were added to the cart, at which point the discount would become 10% of 16 items. This would continue for every factor of 8. This would be useful for sellers who sell items in packages of 8 and only want to give discounts to each group of 8 items. In this case, we do not sell our items this way, so we will leave is field blank. You can also elect to combine the coupon amount with a free shipping offer, either just for the products the coupon is valid for, or for the whole order if one of those products is present in the cart. We aren’t feeling that generous in this case though, so we keep this dropdown at No. Finally we stop further rules from taking effect on the products in this Rule. This means that if one of the products also had another Shopping Cart Discount Rule set up it would not take effect because this rule has the higher priority.
If we were to set this value to No other rules could take effect. For example, if we had a buy 2 get 1 free coupon for one of the items set up to take effect without a coupon it could then take effect after we discounted the first 2 by 10%.
Now that we have the coupon information entered we can move and select which products the coupon is valid for.
In this case we are going to have the coupon valid on all products, so we will leave this section blank. If we wanted to specify this coupon to apply only to certain products, however, we could generate a set of conditions which the products must match in order to have the discount applied to them.
Now we select Save Rule and our 10% coupon is set to go, ready to be mailed in your newsletter and begin generating sales.
Now that we set up a simple rule based coupon, let’s look at how to create more complicated Rules using the Conditions. This works similarly to the conditions we can can create to specify to which products the coupon will apply.
The advanced Conditions provide a lot of flexibility, letting you look at values besides just selecting products. Let’s use the Advanced Conditions to set up a Buy 2 get 1 Free promotion.
In this case we are trying to push a digital camera, a family deal if you will. So we set up the Coupon Information as we did last time. In this case we will leave the coupon code field blank, meaning the discount will take effect once the customer adds the products to their cart.
We want to create the deal for the Argus QC-2185 Quick Click 5MP Digital Camera. We go to the Conditions, where we will set up the rules for the product to take effect.
We want 2 conditions to be true, the product must be the Argus QC-2185 Quick Click 5MP Digital Camera and the quantity in the cart must be 3, so we set the conditions to take effect as shown above. We then move to create our first condition, that the product will be this camera. In this case we will use the SKU of the camera. 
We then want to set up our quantity rule. We are going to set the rule up so that people buying 3 or more will get one free, so we select equals or greater than.
We now move to the Actions to complete the Buy 2 Get 1 Free deal.
We set the discount at a Fixed Amount and enter the discount amount, $34.90. We then set the maximum quantity discount is applied to to 3, leave free shipping and the further rules processing as they are. Because this is a one time fixed amount discount, it does not need to be restricted so that it applies only to certain products, so we will leave the bottom section blank. If we did need to restrict this rule, however, we would establish the conditions here much like those established in the Conditions tab. When we are finished, we will select Save Rule. Now just send out your marketing message telling customers that if they Buy Argus QC-2185 Quick Click 5MP Digital Cameras one of them will be free.
译文:
购物车价格规则是什么？如何利用之？
顾名思义，购物车价格规则是作用于使用购物车的顾客的规则。不管有没有优惠码，这些规则都适用。规则具备一些传统的优惠工具没有的新特点。创建购物车价格规则，点击Promotions -> Shopping Cart Price Rule然后选择Add New Rule（增加新规则）。
一起来创建一个简单的10%的优惠券吧。
首先输一个规则名和描述。然后选择启用它。
然后就是选择该优惠会在哪些页面上启用。在这个例子中，我们假设我们给所有店铺的顾客都可以享受10%的优惠。因此我们把网页所有的使用者和顾客类别都选上。选择的时候按住Ctrl键可以适用多选。
然后我们要设定此优惠券需要输入优惠码激活，输入编码就可以了。如果没有输入任何编码，那么顾客使用购物车的行为将直接激活此规则。
我们对“Uses Per Coupon”和“Uses Per Customer”进行设定。 “Uses Per Coupon” 设定为100，即优惠券只能被使用100次。这样可以营造出一种紧急感。“Users Per Customer”设定为1，每位顾客只能使用一次优惠。
然后我们输入优惠券的有效期以及优惠券的优先数值。在这个例子中我们设定优先数值为0，即最高优先权。如果你还记得，目录价格规则中其实也有提及：当有两个规则同时作用于同一产品的时候，优先权便起作用了。也就是说，数值设定越低的拥有更高的优先权，相应的规则也会优先生效。
你也可以决定是否把此个价格规则公布在RSS feed上。也就是说，你可以决定你的客户登陆后会否通过RSS feed得到这个规则信息。
鉴于我们只是示范创建一个简单的优惠，我们就先跳过一些条件选择了。这些条件选择被跳过，意味着顾客只要输入优惠码，他们的购物车上的货物就会享受相应的折扣。然后，我们还需要对左边导航栏进行一些选择以完成这个优惠的创建。
选择“Percent of Product Price discount”( 其他的选择是针对整个购物车或者买x物品可以免费得到y商品两种类别的固定数额的折扣)，然后选择你想要设定的折扣额。这个例子中我们设定为10。
然后我们设定折扣应用于同一商品的最大数。输入5，也就是说，同一商品只能有5件享受折扣优惠，而第6件只能是按照原价支付了。
接下来是应用折扣所需达到的商品数。如果我们输入8，那么购物车中必需有8样以上的商品才能享受价格优惠。每8样产品组成一个优惠组，享受10%的优惠。这样的设定适用于那些希望对每8件产品实施优惠政策的卖家。在这个例子中，我们不需要这样的功能，所以我们就把这个选项留空了。
接下来你还可以为你的优惠设定免费附送品。附送品可以设定为优惠指定的某些产品，也可以设定为购物车中包括某件商品便可以自由选择的任何产品。这个例子中我们并不打算慷慨解囊，所以我们就不动它了，保持默认的“No”就好了。
最后，我们设定此规则生效后，其他的规则不被执行。意思是：对附有其他购物车折扣规则的产品，此项规则将取而代之。
如果我们选择“No”，那么其他的规则也会生效。譬如，如果某项物品已经附着买二送一的优惠了，再加上这个规则后，购买此商品的顾客将会先享受“10%的折扣”后享受“买二送一”的优惠。
现在我们已经完成了优惠内容的设定。下一步就是选择优惠覆盖的具体产品了。 在这个例子中，我们打算使优惠适用于所有的商品。因此我们就把此项留空。如果我们希望为优惠指定一些具体的商品。那么我们需要设定一系列条件，而此规则只会被应用于满足条件的产品。
最后我们选择保存规则，我们的10%优惠券就正式完成了。别忘了在发给顾客的通讯中提及这个新的优惠券，然后准备好迎接销量增加的喜悦吧！
现在我们已经完成了基于简单规则的优惠券的设定，我们不妨再试一下使用更多的条件选项，创建一个复杂的规则。这其实和之前提及的为优惠指定某些商品的设定是差不多的。
高级的条件设定为用户提供了很多便利。用户不仅仅可以选定产品，还可以选定一些参数。现在我们一起使用高级设定创建一个“买二送一”的免费促销规则。
这个例子中我们的促销对象是一台数码相机（我们就假定其为家庭机吧），我们先按照上面的方法输入优惠券内容。这个案例中我们把优惠券编码栏留空，因为我们希望此项优惠适用于任何该网站消费者。
我们为Argus QC-2185 Quick Click 5MP数码相机建构一个优惠券。点击“Conditions”，在这里为规则生效定义条件。 我们设定两个条件：一个是产品必需是Argus QC-2185 Quick Click 5MP数码相机；另一个是购买的数量是3个（我们用上面教过的方法便可以完成此设定）。那我们就把注意力放在如何完成第一条件的设定吧。这个例子中我们会使用相机的SKU库存单位 为了实现对购买3个或者以上数量的数码相机的顾客实施免费赠送，设定规则的方法如下： 我们为固定数量的购买设定了优惠（输入优惠数额是$34.9），设定享受优惠的最小数额为3，并且使此项优惠设定不影响免费优惠的执行。因为这是一次性的具体数额的优惠设定，所以不必再定义其只对某些产品作用了，把这一个选项留空就可以了。如果我们需要限定这里的条件，我们必需像上面的条件设定那样详细标明。完成以后，选择保存规则。然后把这个信息告诉你的顾客，如果他们购买3个或以上数量的Argus QC-2185 Quick Click 5MP数码相机，其中一台会是免费的！