Working on upgrading a 1.3.9h to 1.5.1 site

Merged custom files into 1.5.1 versions

This site has custom code that displays attributes on the product listing page

In the 1.3.9h site adding to cart from the product listing page yields a correct add to cart with correct price

In the 1.5.1 site - adding to cart from the product listing page yields a product added BUT $0.00 as the cost

Modifications originally were added to the column-grid product listing plugin

No other plugins except for this custom code which is not a plugin available

Relevent code block change in /includes/modules/product_listing.php
Code:
        if (isset($_GET['manufacturers_id'])) {
          $lc_text = '<h3 class="itemTitle"><a href="' . zen_href_link(zen_get_info_page($listing->fields['products_id']), 'products_id=' . $listing->fields['products_id']) . '">' . $listing->fields['products_name'] . '</a></h3><div class="listingDescription">' . zen_trunc_string(zen_clean_html(stripslashes(zen_get_products_description($listing->fields['products_id'], $_SESSION['languages_id']))), PRODUCT_LIST_DESCRIPTION);
			
			require($template->get_template_dir('/tpl_modules_attributes_listing.php',DIR_WS_TEMPLATE, $current_page_base,'templates'). '/tpl_modules_attributes_listing.php');
			
			$lc_text .= '</div>' ;
			
        } else {
          $lc_text = '<h3 class="itemTitle"><a href="' . zen_href_link(zen_get_info_page($listing->fields['products_id']), ($_GET['cPath'] > 0 ? 'cPath=' . $_GET['cPath'] . '&' : '') . 'products_id=' . $listing->fields['products_id']) . '">' . $listing->fields['products_name'] . '</a></h3><div class="listingDescription">' . zen_trunc_string(zen_clean_html(stripslashes(zen_get_products_description($listing->fields['products_id'], $_SESSION['languages_id']))), PRODUCT_LIST_DESCRIPTION);

			require($template->get_template_dir('/tpl_modules_attributes_listing.php',DIR_WS_TEMPLATE, $current_page_base,'templates'). '/tpl_modules_attributes_listing.php');
				
			$lc_text .= '</div>' ;
Can provide additional data if I knew what to provide