function wc_varb_price_range( $wcv_price, $product ) {
 
    $prefix = sprintf('%s: ', __('From', 'wcvp_range'));
 
    $wcv_reg_min_price = $product->get_variation_regular_price( 'min', true );
    $wcv_min_sale_price    = $product->get_variation_sale_price( 'min', true );
    $wcv_max_price = $product->get_variation_price( 'max', true );
    $wcv_min_price = $product->get_variation_price( 'min', true );
 
    $wcv_price = ( $wcv_min_sale_price == $wcv_reg_min_price ) ?
        wc_price( $wcv_reg_min_price ) :
        '<del>' . wc_price( $wcv_reg_min_price ) . '</del>' . '<ins>' . wc_price( $wcv_min_sale_price ) . '</ins>';
 
    return ( $wcv_min_price == $wcv_max_price ) ?
        $wcv_price :
        sprintf('%s%s', $prefix, $wcv_price);
}
 
add_filter( 'woocommerce_variable_sale_price_html', 'wc_varb_price_range', 10, 2 );
add_filter( 'woocommerce_variable_price_html', 'wc_varb_price_range', 10, 2 );