How to prevent products from displaying as 0.00 on Dawn 2.0?

We created a product and forgot to add a price, so it appears as 0.00
Is there anyway to make stop this from happening? Maybe make the price field required?
I have looked at the community posts and can’t find the exact solution we need.
Making 0.00 appear as call for price would be a solution, we are using Dawn 2.0
https://cornsnake.net/products/z-test

We had a very irate customer when we cancelled his order and told him he couldn’t have a free snake.

Thanks in advance.