title: Magento shipping rules exclude sale items from total rule
body: <p>I am trying to set a shipping rule in Magento that gives free shipping on orders over £150 where the £150 threshold is comprised only of non sale items.</p>
  
  <p>So far I can get a handle on the sale items by their category:</p>
  
  <pre><code>If ANY  of these conditions are TRUE :
      If ALL  of these conditions are TRUE :
          Category  is not  194, 370, 367, 369, 366, 368 
          Price  equals or greater than  150 
  </code></pre>
  
  <p>This excludes all sale items then applys discounts for totals over 150.          </p>
  
  <p>But what I really need to determine is what the total of the cart is excluding any sale items. </p>
  
  <p>Is there any way to differ between the whole cart total and a subset of the cart total of, be it exclusion by category, or special price etc?</p>
  
  <p>Any pointers would be much appreciated.           </p>