Add charge for an option value (new version)
The Add Charge feature allows you to increase the product price based on customers’ selections - all without creating new products in your store.
This new version is applied to stores that installed our app after 10:00 AM, October 10 (UTC).
👉 Check out our Demo Product to see how the Add Charge works in action.
How to Create an Add Charge
Follow these steps to set up the Add Charge feature:
1. Create a New Option Set
Go to the Avis Option tab → click Create Option Set.
2. Add an Option
Click Add Option and choose the Option Type for your Add Charge (e.g., dropdown, button, swatch, etc.).
3. Set the Add Charge Value
Under Option values, find the value you want to add a charge to.
Click Keep price → choose Add charge from the dropdown.
Enter the amount you’d like to add to the product’s base price.
Example: If you set 25 for Medium and 30 for Large, and your store’s default currency is USD, the additional charges will be $25 and $30.
4. Assign to Products
In the Select product section,
choose the products that should include this Option Set. Finally, click Save at the top right corner to apply your changes.
How It Appears on Your Store
-> Here is how the Add Charge will show on the Product page.
Customers will see the option values with the updated pricing displayed clearly.
-> Here is how the Add Charge option will show on the Cart page.
After selecting an Add Charge option, the product will be added to the cart with the total updated price (base price + add charge).
-> Here is how the Add Charge option will show on the Checkout page.
At checkout, the system automatically adds the total price - you’ll see the main product and an associated “add-on” charge line, handled by our app for accurate billing.
What’s New in This Version?
This updated version of Add Charge brings key improvements:
✅ No extra products created in your Shopify store. → No need to hide or manage additional add-on products. → No SEO or storefront clutter concerns.
✅ Works with dynamic checkout buttons directly on the product page. → The old version only worked at the cart level.
⚠️ Note:
Because no separate add-on product is created, inventory tracking for Add Charge items is not available.
One-time charge is not available
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