Tip: This feature is only supported for Template based Form Fields not for Document based ones.
Price Relevant is an indicator to a connected e-commerce system that this Form Field represents a potential price change or option. This will not have any effects within the Editor, but it will trigger a callback in the frontend API to allow for price changes in the shop page when this Form Field is changed (e.g., for a product option).
Select-list (including Select List with Info and Tab-List), Image-list (including Image List & Caption), and Color-list Form Fields as well as Number and Table Form Fields can all be set to Price Relevant.
A coin icon will be shown on the Form Field to indicate if it has been set as Price Relevant:

Attention: This is a feature of the Panel-UI.
For Single Line Text frames you can charge a price per letter.

Therefore you have to do two steps:
To test it you have to use the test link which you can access through the Template Context Menu only. Select Test-Link/ Embed.

This will open a dialog box. In the Test-Link tab click Generate Test-Link - the generated link opens the Panel UI. Next to it you will also find separate links for the Slim Ui and the Legacy UI.

At the Buyer Side you now see the inline displayed price which is changing with the number of characters automatically.
