Field Types
Dropdown Field
Dropdown field for longer option lists. Each option can have its own price.
When to use
- Long lists of sizes, regions, or SKUs
- Options that would clutter a radio list
- Pick-one choices with per-option pricing

The Size dropdown field on the Premium Custom T-Shirt demo product — captured on the live Smart Add-Ons demo store.
Settings reference
| Setting | Description |
|---|---|
| Field label | The title customers see above the dropdown. |
| Options & prices | One row per choice: Label (what customers see), Value (stored value, used in conditional rules) and Price. Click Add option for more rows. |
| Description | Optional help text shown below the field label on the product page. |
| Required field | Customers must choose an option before adding the product to cart. |
| Price type | Fixed amount or Percentage of product price. With percentage, each option’s Price is a % of the product price. See Pricing. |
| Quantity pricing | Per product quantity multiplies the price by the quantity ordered. Flat fee (once per line item) charges it once. |
| Conditional logic | Tick Enable conditional logic to show or hide this field based on another field in the same group. See Conditional logic. |
Order item meta
The selected value is stored on the order item:
Field label: "Size"
Value: Large
Price: +8.00How to add a dropdown field
- In WordPress, go to Smart Add-Ons → Add-On Groups and open a group, or click + Add group.
- Click + Add field.
- Enter a Field label and set Field type to Dropdown.
- Under Options & prices, enter a Label, a Value and a Price for each choice. Click Add option for more.
- Choose the Price type: Fixed amount, or Percentage of product price.
- Click Save group, then open a product the group applies to and check the field.
Example: size with a surcharge
A T-shirt store adds a dropdown labelled “Size” with options Small (0), Medium (0), Large (2) and XX-Large (4), price type Fixed amount. Choosing XX-Large adds 4 to the price, and the live total on the product page updates straight away. The cart shows “Size: XX-Large”.
Dropdown field FAQ
When should I use a dropdown instead of radio buttons?
Use a dropdown for long lists (six or more choices) where showing every option would crowd the page. Use Radio when customers should see all choices at once.
Can each option have a different price?
Yes. Every option row has its own Price. With the Percentage price type, each price is a percentage of the product price.
Can customers pick more than one option?
No, a dropdown is pick-one. For several choices at once, use Checkbox Group.