Display "Call for Price" for products in WooCommerce

/**
 * Changes price to "Call for Price" for all products with empty price.
 *
 * @see https://wpcodebook.com/snippets/display-call-for-price-for-products-in-woocommerce/
 */
add_filter( 'woocommerce_empty_price_html', function ( $price ) {
	return __( 'Call for Price' );
}, PHP_INT_MAX );