WooCommerce - Custom variable price by product

<?php
  // Custom variable price by product
  // code goes in functions.php for your child theme
  add_filter( 'woocommerce_variable_sale_price_html', 'custom_variable_price', 40, 2 );
  add_filter( 'woocommerce_variable_price_html',      'custom_variable_price', 40, 2 );
  function custom_variable_price( $price, $_product ) {
    $product_id = $_product->id;
    switch ($product_id) {
      case 1569:
        return 'From $0.80 per item';
      default:
        return $price;
    } // end switch
  } // end function