How to set price as POA within a show data tag and product page

gistfile1.txt

<!-- category/main page layout --->

{price}
 <div class="item-price">
 
[ekm:nested_if]
    iftype="CONTAINS";
    ifvalue="[price]";
    ifvalue2="0.00";
    ifthen="<span class="price-alt"> POA </span>";
    ifelse="[price]";
[/ekm:nested_if]

 </div>
 {/price}
 
<!-- product page layout --->
 
[ekm:if]
    iftype='EQUALS';
    ifvalue='0.00';
    ifvalue2='[ekm:productprice]price_text_layout='[price]'; value_only='yes';[/ekm:productprice]';
    ifthen='POA';
    ifelse='[ekm:productprice][/ekm:productprice]';
[/ekm:if]