Is this method for 1.6, right? I have tried your code, as you mentioned, but without success. Now i am not sure, if i am doing smthing wrong, or there is just a small error and needs a little tweak. Thanks,
Function i pasted in order.php , and foreach into view.tpl
//edit:
I think there is an error in sql querry: od.supplier_price shoud lbe --> od.purchase_supplier_price
Then it shows result, but like this: