use zero amount as trial

products.tpl

@@ -1,3 +1,4 @@
+{debug}
 {include file="orderforms/{$carttpl}/common.tpl"}
 
 <!-- Start of Template: orderforms/thurdata/products.tpl -->
@@ -169,7 +170,7 @@
 							    {/if}
 							    <tr style="height:60px;">
 								<td> <!-- Price -->
-	    							    {if $product.bid}
+									{if $product.bid}
 								    {elseif $product.paytype eq "free"}
 									<mark style="font-size:160%;background-color:#2368AD;">{$LANG.orderfree}</mark>
 								    {elseif $product.paytype eq "onetime"}