Snippet to display variation price in place of parent product price on WooCommerce product page

replace-main-price-with-variation-price.php

<?php

// You can add this function to any hook listed here - https://www.businessbloomer.com/woocommerce-visual-hook-guide-single-product-page/

function custom_wc_template_single_price() {
    global $product;

    if ( $product->is_type('variable') ):

        // Main Price
        $prices = array( $product->get_variation_price( 'min', true ), $product->get_variation_price( 'max', true ) );
        $price = $prices[0] !== $prices[1] ? sprintf( __( 'From: %1$s', 'woocommerce' ), wc_price( $prices[0] ) ) : wc_price( $prices[0] );

        // Sale Price
        $prices = array( $product->get_variation_regular_price( 'min', true ), $product->get_variation_regular_price( 'max', true ) );
        sort( $prices );
        $saleprice = $prices[0] !== $prices[1] ? sprintf( __( 'From: %1$s', 'woocommerce' ), wc_price( $prices[0] ) ) : wc_price( $prices[0] );
        if ( $price !== $saleprice && $product->is_on_sale() ) {
            $price = '<del>' . $saleprice . $product->get_price_suffix() . '</del> <ins>' . $price . $product->get_price_suffix() . '</ins>';
        }

        ?>
        <style>
            div.woocommerce-variation-price,
            div.woocommerce-variation-availability,
            div.hidden-variable-price {
                height: 0px !important;
                overflow:hidden;
                position:relative;
                line-height: 0px !important;
                font-size: 0% !important;
                visibility: hidden !important; 
            }
        </style>
        <script>
            jQuery(document).ready(function($) {

                // When variable price is selected by default
                setTimeout( function(){
                    if( 0 < $('input.variation_id').val() && null != $('input.variation_id').val() ){
                        if ( $('p.availability') )
                            $('p.availability').remove();

                        $('p.price').html($('div.woocommerce-variation-price > span.price').html()).append('<p class="availability">'+$('div.woocommerce-variation-availability').html()+'</p>');
                    }
                }, 300 );

                // On live variation selection
                $('select').blur( function(){
                    if( 0 < $('input.variation_id').val() && null != $('input.variation_id').val() ){
                        if ( $('.price p.availability') || $('.price p.stock') )
                            $('p.price p').each(function() {
                                $(this).remove();
                            });

                        $('p.price').html($('div.woocommerce-variation-price > span.price').html()).append('<p class="availability">'+$('div.woocommerce-variation-availability').html()+'</p>');
                    } else {
                        $('p.price').html( $('div.hidden-variable-price').html() );
                        if ( $('p.availability') )
                            $('p.availability').remove();
                    }
                });
            });
        </script>
        <?php

        echo '<p class="price">'.$price.'</p>
        <div class="hidden-variable-price" >'.$price.'</div>';

    endif;
}

?>