How to Charge Extra for Personalization Options

Last updated: May 21, 2026

If you want to charge shoppers extra for certain personalization choices, you can do that by linking a Customily option to a Shopify product.

When a shopper selects that option, the linked product is automatically added to the cart, increasing the total price.

For example, let’s say you sell a monogrammed tote bag and want to charge an additional $5 if shoppers choose gold foil personalization.

To do this, you would:

  • Create a Shopify product priced at $5

  • Link that product to the Gold Foil option in Customily

When a shopper selects Gold Foil:

  • The product price will update to reflect the additional cost

  • The cart will show both the tote bag and the extra $5 charge as a separate line item

How to Set Up Extra Charges

1. Create a Shopify product for the extra charge

Start by creating a product in Shopify that represents the extra personalization charge.

In this example, we’ll create a product called Gold Foil Upgrade priced at $5.

Make sure this product is:

  • Active

  • Available on the same sales channels and apps as your personalized product

If you don’t want shoppers browsing these products in your storefront, you can keep them hidden by placing them in a collection that isn’t visible in your store navigation.

Tip

You can also assign a SKU and track inventory for these products if needed.

2. Connect that product to your Customily option

Once your extra-charge product is ready in Shopify, you can link it to the personalization option in Customily.

  1. In Customily, open the Option Set connected to the product you want to edit.

  2. Find the option that should trigger the extra charge, expand it, and open the Functions section.

  3. Click Add Function, then select Add Shopify Product.

  4. Expand the option value you want to affect, then click Add Product.

  5. Browse and select the Shopify product you created earlier.

    If you're using a Shopify product with variants, make sure to select the correct variant for that personalization option.

    You can also set how many units of that product should be added to the cart.

    Once the product is selected, it will look like this:

  6. Save the Option Set to apply your changes.

Tip

Need to charge different amounts for different personalization choices? Instead of creating multiple Shopify products, you can create a single product with multiple variants, each with its own price, and link the appropriate variant to each Customily option value.

What Shoppers Will See

When shoppers select that personalization option on your storefront, the price will update automatically.

For example:

  • Base tote bag price: $30

  • with Gold foil selected: $35

In the cart, shoppers will see:

  • The original product

  • The extra personalization charge as a separate line item

Tip

Because the extra charge appears as a separate cart item, it’s a good idea to name these Shopify products clearly (for example, Gold Foil Upgrade instead of just Product 123) so the cart experience feels intuitive.