It allows you to replace Zero price of product with custom text.
The custom text can be configured at admin setting 'Store > Configuration > RedChamps > Zero Price Text > General Settings'.
Here, please note that the price will be replaced at only product view and list pages. It will not impact mini-cart, cart and checkout pages.
composer require redchamps/module-zero-price-text
Contributions are more than welcome :-)
Please visit our store https://redchamps.com for more free/paid extensions from us.