Wordpress duplicating information - php

Question

Not sure why this is happening. The script below displays the title, link and custom meta of all pages using a specific template.
For some reason its duplicating the information.
Online example: http://greenleavesmarketing.co.uk/sherif/prices/
Script:
<?php // Display list of pages using the template page-landing.php
$product_pages_args = array(
'meta_key' => '_wp_page_template',
'meta_value' => 'page-landing.php',
'depth' => -1,
'hierarchical' => 0,
);
$product_pages = get_pages( $product_pages_args );
echo '<table class="price-table">
<thead>
<tr>
<td>Dental Procedure</td>
<td>Cost</td>
</tr>
</thead>';
foreach ( $product_pages as $product_page ) {
echo '
<tr>
<td>
'.$product_page->post_title .'
</td>
<td>'; ?>
<?php
$custom_metabox = get_post_meta($product_page->ID,'_custom_meta',TRUE);
if($custom_metabox['landing-para']!=false) {
echo $custom_metabox['landing-para'];
} else {
echo 'Please contact us for a free consultation.';
}
echo '</td>
</tr>';
}
echo '</table>'; wp_reset_query(); ?>

Answer 1

This doesn't necessarily fix the underlying problem, but if all $product_page->post_title values are unique, you could store them in an array as you go through the foreach loop and continue if the value already exists:
// create a dummy array to store $product_page->post_title values:
$post_titleArr = array();
foreach ( $product_pages as $product_page ) {
if (in_array($product_page->post_title, $post_titleArr)) continue; // skip this iteration for dupe.
$post_titleArr[] = $product_page->post_title; // not a dupe - add it to the array.
// continue your code...
echo '