> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upstackdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Cost per Select Shipping Method: Checkout Shipping Selection Efficiency

> Track cost per select shipping method to measure ad spend efficiency at the shipping selection stage. Calculate checkout funnel acquisition cost for your Shopify store.

<Tip>
  Cost per Select Shipping Method measures the average ad spend required to generate one shipping method selection event during checkout.
</Tip>

## Formula

<Info>
  **Cost per Select Shipping Method** = **Channel Spend** ÷ **Select Shipping Method Events**
</Info>

### Formula Components

| Metric                     | Definition                                                                             |
| -------------------------- | -------------------------------------------------------------------------------------- |
| **Channel Spend**          | Total advertising spend across all connected ad platforms                              |
| **Select Shipping Method** | Count of shipping method selection events tracked by the Upstack pixel during checkout |

| Metadata        |                         |
| --------------- | ----------------------- |
| **Type**        | Currency                |
| **Data Source** | [Upstack Pixel](/pixel) |
| **Aggregation** | Ratio                   |

***

## Example

Your Shopify store spent **\$10,000 on ads** this month and generated **2,500 shipping method selection events** during checkout.

| Stage                  | Events | Cost per Event |
| ---------------------- | ------ | -------------- |
| Initiate Checkout      | 4,200  | \$2.38         |
| Select Shipping Method | 2,500  | \$4.00         |
| Add Payment Info       | 2,100  | \$4.76         |
| Purchase               | 1,800  | \$5.56         |

**Cost per Select Shipping Method** = \$10,000 ÷ 2,500 = **\$4.00**

***

## How It Works

This metric divides your total advertising spend by the number of times visitors selected a shipping method during checkout, as tracked by the Upstack pixel. It provides visibility into the cost efficiency of moving shoppers through the shipping selection stage—a critical mid-funnel checkpoint before payment.

***

## When to Use

| Scenario                 | Action                                                                       |
| ------------------------ | ---------------------------------------------------------------------------- |
| Checkout funnel analysis | Compare against other checkout stage costs to identify drop-off points       |
| Shipping UX optimization | High cost per shipping selection may indicate UX friction or limited options |
| Campaign optimization    | Use as a leading indicator before purchase completion                        |
| Seasonal planning        | Track changes during peak periods when shipping expectations shift           |

***

## Related Metrics

| Metric                                                                                   | Relationship                                      |
| ---------------------------------------------------------------------------------------- | ------------------------------------------------- |
| [Conversions](/reference/metrics/funnel/conversions/conversions)                         | Final conversion outcome after shipping selection |
| [Cost per All Purchase](/reference/metrics/funnel/conversions/cost-per-all-purchase)     | Downstream cost efficiency at purchase completion |
| [Session Conversion Rate](/reference/metrics/funnel/conversions/session-conversion-rate) | Overall store conversion efficiency               |

[See all Attributed Conversions metrics →](/reference/metrics/funnel/conversions)