> ## Knowledge Base Index > Fetch the complete knowledge base index at: https://help.optis.me/sitemap.xml > Use this file to discover available pages before exploring further. > Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash). # Manage add-on (additional fee for option) 1. [OPTIS Product Options, Variant](/product-options) 2. [Advanced Setup](/product-options/advanced-setup) # Manage add-on (additional fee for option) ## Overview A **price add-on** lets you charge an extra fee when customers choose a specific option or value, for example gift wrapping (+$5) or a premium material. https://storage.crisp.chat/users/helpdesk/website/-/7/9/d/2/79d26e560073ac00/fd65dfbc-92f9-4fa8-a437-319cec_ewqp7n.png || Price add-on is available on the **Advanced** plan and above. See [Plans and feature availability](https://help.optis.me/en/article/plans-and-feature-availability-s1q8nv/). ## Add-on types For each option (or each value of an option) you choose one of two add-on types: | Type | What it does | Plan | | ------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------ | | **Extra fee** | Charges the amount you enter on top of the product price. | Advanced and above | | **Upsell product** | Links the value to a Shopify variant, so the price and the stock of that variant are used. See [How to Use "Upsell product"](https://help.optis.me/en/article/how-to-use-upsell-product-link-stock-and-price-of-shopify-variant-to-option-value-1ivjbxh/). | Platinum and above | This guide explains how to set up an **Extra fee**. ## Which options can have an add-on Where you set the add-on depends on the option type: | Option types | Where to set the add-on | | -------------------------------------------------------------------------------------- | ---------------------------------------------------------------------- | | Text box, Text area, Number field, Email, File upload, Color picker, Font picker | **Option settings** > **Add-on** (one price for the whole option) | | Checkbox, Dropdown menu, Dropdown with thumbnail, Radio button, Switch, Button, Swatch | **Option values** table > **Add-on** column (one price for each value) | | Date & time, Paragraph, Heading, Divider, Pop-up modal | Add-ons are not available | ## Set up an extra fee ### Step 1: Open the option In the option set editor, go to **1. Add options** and click the option you want to add a fee to. Its settings open in the **Content** tab. https://storage.crisp.chat/users/helpdesk/website/-/6/2/e/f/62ef0b4dd5fbe000/ca4c7293-56e5-4802-81e0-a68c4c_y7qq04.png ### Step 2: Choose Extra fee and enter the price Set **Add-on** to **Extra fee**, then enter the price: * **Options with a list of values** - in the **Option values** table, choose **Extra fee** and type a price for each value in the **Add-on** column. * **Single-value options** - in **Option settings**, choose **Extra fee** next to **Add-on** and type the price. || Can't see the **Add-on** column? Click the **Columns** icon next to **Option values** and turn on **Add-on**. https://storage.crisp.chat/users/helpdesk/website/-/9/c/b/c/9cbc0fa4d06df000/c26b8418-d755-4239-b56b-070f40_1sbcz85.png ### Step 3: Save and check on your store 1. Click **Save**. 2. Open the product page on your store and select the option. The extra fee is added to the price. https://storage.crisp.chat/users/helpdesk/website/-/4/8/3/f/483f32671644a800/442ec45a-778f-4cdc-8a34-aa5534_1e7gxk.png ## How customers see the extra fee * **On the product page** - you choose when the price appears in **Settings > General Settings > Option type setting > Add-on display**: * **After selecting option values** (default): the extra fee is shown once the customer selects the value. * **Next to option values**: the extra fee is always shown next to each value. * **In the cart** - the extra fee is shown next to the selected value, for example (+$5). * **At checkout** - the extra fee appears with the text **Selection extra fee for {{Product title}}**. You can rename this text in **Settings > Translation Texts > Default text customization > Checkout page**. * **With Quantity** - if the option uses [Quantity](https://help.optis.me/en/article/how-to-use-the-quantity-feature-for-options-126ktye/), the fee is multiplied by the quantity the customer chooses (for example, 3 x $5 = $15). ## Show the updated total price on the product page (optional) To show the new total price on the product page while customers choose add-ons, install the advanced feature **Show updated total price with add-ons**. In the app, go to **Advanced features**, find the card and click **Self-install (for dev)**, or click **Contact us** and we install it for you for free. See [Show updated total price with add-ons](https://help.optis.me/en/article/show-updated-total-price-with-add-ons-1d77ean/). https://storage.crisp.chat/users/helpdesk/website/-/4/1/1/1/4111f7818fb4a000/00903e37-8e61-4388-af12-01a843_i9z4pm.png ## Related guides * [How to Use "Upsell product"](https://help.optis.me/en/article/how-to-use-upsell-product-link-stock-and-price-of-shopify-variant-to-option-value-1ivjbxh/) * [How to Use the "Quantity" Feature for Options](https://help.optis.me/en/article/how-to-use-the-quantity-feature-for-options-126ktye/) * [Show updated total price with add-ons](https://help.optis.me/en/article/show-updated-total-price-with-add-ons-1d77ean/) * [Sync price list with market prices](https://help.optis.me/en/article/sync-price-list-with-market-prices-1ldrpku/) - if you sell in several Shopify Markets * [Settings overview](https://help.optis.me/en/article/settings-overview-196q758/) * [Plans and feature availability](https://help.optis.me/en/article/plans-and-feature-availability-s1q8nv/)