Rey adds a few special features for the Price in the product page, such as:
- Change main price for Variable products;
- Calculate total from quantity;
- Show price in the Add to cart button;
- Show price instalments.
Short demos can be viewed here https://d.pr/v/a8aovJ and https://d.pr/v/SWRj8m .
To enable these features please access Customizer > WooCommerce > Product page > Components in Summary > Product Price eg: https://d.pr/i/bR5L93 . The price in Add to cart option is located in Add to cart (block) settings eg: https://d.pr/i/5lgEGI .