---
title: CartLineCost - Storefront API
description: The cost of the merchandise line that the buyer will pay at checkout.
api_version: 2025-10
api_name: storefront
type: object
api_type: graphql
source_url:
  html: 'https://shopify.dev/docs/api/storefront/latest/objects/CartLineCost'
  md: 'https://shopify.dev/docs/api/storefront/latest/objects/CartLineCost.md'
---

# Cart​Line​Cost

object

The cost of the merchandise line that the buyer will pay at checkout.

## Fields

* amount​Per​Quantity

  [Money​V2!](https://shopify.dev/docs/api/storefront/latest/objects/MoneyV2)

  non-null

  The amount of the merchandise line.

* compare​At​Amount​Per​Quantity

  [Money​V2](https://shopify.dev/docs/api/storefront/latest/objects/MoneyV2)

  The compare at amount of the merchandise line.

* subtotal​Amount

  [Money​V2!](https://shopify.dev/docs/api/storefront/latest/objects/MoneyV2)

  non-null

  The cost of the merchandise line before line-level discounts.

* total​Amount

  [Money​V2!](https://shopify.dev/docs/api/storefront/latest/objects/MoneyV2)

  non-null

  The total cost of the merchandise line.

***

## Map

### Fields with this object

* ||-[BaseCartLine.cost](https://shopify.dev/docs/api/storefront/latest/interfaces/BaseCartLine#fields-cost)
* {}[CartLine.cost](https://shopify.dev/docs/api/storefront/latest/objects/CartLine#field-CartLine.fields.cost)
* {}[ComponentizableCartLine.cost](https://shopify.dev/docs/api/storefront/latest/objects/ComponentizableCartLine#field-ComponentizableCartLine.fields.cost)