# How to Use "Upsell product"? Link Stock and Price of Shopify Variant to Option Value

Our app supports **product option inventory management**, allowing specific options to be **grayed out when out of stock** and ensuring that inventory updates automatically when a customer purchases an option.

This feature, called **"Upsell product"** links an option to a specific Shopify variant, syncing stock and price automatically. This feature is available in our **$19.99/month plan**:

<figure><img src="https://storage.crisp.chat/users/helpdesk/website/-/2/2/4/2/22429817467a0000/image_pqwtpl.png" alt=""><figcaption></figcaption></figure>

### Step-by-Step Guide to Set Up "Upsell product" <a href="#id-2-step-by-step-guide-to-set-up-upsell-product" id="id-2-step-by-step-guide-to-set-up-upsell-product"></a>

#### Step 1: Create Draft Products with Variants <a href="#id-3-step-1-create-draft-products-with-variants" id="id-3-step-1-create-draft-products-with-variants"></a>

1. In your Shopify store, create a draft product with different variants.
2. Assign stock levels and prices to each variant.

* Example:
* **Black variant:** Stock = **5**, Price = **$0** (only tracks stock).
* **White variant:** Stock = **0**, Price = **$1000** (tracks both stock and price).<br>

<figure><img src="https://storage.crisp.chat/users/upload/session/-/4/6/c/9/46c94fa4c7cb6000/image1ejgxli_odqxsn.png" alt=""><figcaption></figcaption></figure>

#### Step 2: Assign Variants to Product Options <a href="#id-3-step-2-assign-variants-to-product-options" id="id-3-step-2-assign-variants-to-product-options"></a>

1. Navigate to the **Upsell product** section in the app.
2. Select the corresponding Shopify variant for each option.

<figure><img src="https://storage.crisp.chat/users/helpdesk/website/-/2/2/4/2/22429817467a0000/image_1brgmsf.png" alt=""><figcaption></figcaption></figure>

#### Step 3: View the Result on Your Storefront <a href="#id-3-step-3-view-the-result-on-your-storefront" id="id-3-step-3-view-the-result-on-your-storefront"></a>

* If a variant is out of stock, the assigned option will be **grayed out** automatically.
* If a variant has stock (for example 4 stocks), then the option linked with this variant will also have 4 stocks

<figure><img src="https://storage.crisp.chat/users/upload/session/-/4/6/c/9/46c94fa4c7cb6000/image1bljvlz_ymv3ug.png" alt=""><figcaption></figcaption></figure>

* When a customer purchases an option, the inventory updates in real-time (e.g., black stock reduces from 5 to 4).

<figure><img src="https://storage.crisp.chat/users/helpdesk/website/-/2/2/4/2/22429817467a0000/image_4z6xs8.png" alt=""><figcaption></figcaption></figure>

#### **Optional: Keep Variants in Draft Mode** <a href="#id-3-optional-keep-variants-in-draft-mode" id="id-3-optional-keep-variants-in-draft-mode"></a>

* If you do not want these variants to appear as active products in your store, you can keep them in **draft mode** in Shopify.

By following these steps, you can **prevent customers from selecting out-of-stock options** while keeping your inventory automatically updated!


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