Dvojna cijena za custom meta

function mx_show_custom_price() {
        global $product;
        $mx_product_custom_price = $product->get_meta ('cash_price');
        $price_eur = convert_to_eur($mx_product_custom_price);
        $formatted_price_eur = "<span class='woocommerce-Price-amount amount amount-eur'> <small>($price_eur €)</small> </span>";
         echo "
    <div id='price-container'>
          <span id='price-text'>Neka druga cijena:</span> <span>". number_format($mx_product_custom_price, 2, ",", ".").' kn' .  $formatted_price_eur ."</span>
    </div>
    ";
}