In the admin you can preview the customiser at any time after making changes to it. This allows you to work on a customiser as a draft before its seen by customers on your store.
In preview mode, you can see the price breakdown as well.
To preview a customiser in the admin, do the following.
Navigate to Sign Customiser in Shopify admin
Click on Customisers
Click on the three dots … of the customiser you wish to preview
Alternatively, when in the customiser menu you can preview the customiser by clicking on the preview in the top right.
Both options will display the customiser as illustrated by this picture below.
