WooCommerce - Replace product prices by ID and currency

/**
 * Replaces regular and/or sale prices for specific product IDs, depending on the currency.
 *
 * HOW TO USE THIS CODE
 * Simply add the code to the bottom of your theme's functions.php file, and it
 * will run automatically. For more information: https://www.skyverge.com/blog/add-custom-code-to-wordpress/
 *
 * GPL DISCLAIMER
 * Because this code program is free of charge, there is no warranty for it, to the extent permitted by applicable law.
 * Except when otherwise stated in writing the copyright holders and/or other parties provide the program "as is"
 * without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of
 * merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of the program
 * is with you. should the program prove defective, you assume the cost of all necessary servicing, repair or correction.
 *
 * Need a consultation, or assistance to customise this code? Find us on Codeable: https://aelia.co/hire_us
 *
 * @param float converted_price
 * @param float original_price
 * @param string from_currency
 * @param string to_currency
 * @param int price_decimals
 * @param WC_Product product
 * @param string price_type
 * @return string
 */
add_filter('wc_aelia_cs_convert_product_price', function($converted_price, $original_price, $from_currency, $to_currency, $price_decimals, $product, $price_type) {
  // Store custom product prices
  $product_prices = array(
    // 3578 is a product ID
    3578 => array(
      'USD' => array(
        'regular_price' => 349,
        //'sale_price' => 99,
      ),
      'EUR' => array(
        'regular_price' => 340,
        //'sale_price' => 79,
      ),
      'GBP' => array(
        'regular_price' => 299,
        //'sale_price' => 79,
      ),
      'AUD' => array(
        'regular_price' => 490,
        //'sale_price' => 79,
      ),
    ),
  );
  // If a price is set for the combination of product ID, currency and price type,
  // take it and replace the result of the conversion
  if(isset($product_prices[$product->get_id()][$to_currency][$price_type])) {
    $converted_price = $product_prices[$product->get_id()][get_woocommerce_currency()][$price_type];
  }

  return $converted_price;
}, 10, 7);