I don't have a button to be able to edit my original post (since it was only my 2nd post on the forum) but it looks like I have incorrect information there. You do not need to modify the tpl_product_info_display.php file as it is already doing the check correctly. Instead, just edit
/includes/templates/template_default/un_wishlist_find/tpl_un_wishlist_find_default.php
Find:
PHP Code:
<li class="price"><?php echo TEXT_BASE_PRICE . $products_price; ?></li>
Replace with:
PHP Code:
<li class="price"><?php echo ((zen_has_product_attributes_values((int)$products->fields['products_id']) and $flag_show_product_info_starting_at == 1) ? TEXT_BASE_PRICE : '') . $products_price; ?></li>
Sorry for the confusion. I copied the checking code from the tpl_product_info_display.php file and must have confused the two files when I posted the instructions.