Schema Test Error – How to add PriceRange

Doing a google schema test on of my listing I found only 1 error, which is pretty good – however, is there anyway we can fix this by adding the field (with schema) priceRange?
I know that I can add a field, but I would not know how to add a field that would include the correct Schema on the page. I would think that would be something that would need to happen in the core of the plugin.
Here is a listing
https://theadultromanceconsultantfinder.party/romance_consultants/new-york/lockport/see-shell-play/
As you can see – 1 warning in the LocalBusiness area “The priceRange field is recommended. Please provide a value if available.”
Is there a temporary fix I can do to add this field to my directory with the correct Schema, and, can you add this as a custom field in an upgrade?