{{ if {bison:cart_discount} }}
<tr>
  <th colspan="4">Discount:</th>
  <td class="numeric">-${{ bison:cart_discount }}</td>
</tr>
{{ endif }}
<tr>
  <th colspan="4">Total:</th>
  <td class="numeric"><h3>${{ bison:cart_total }}</h3></strong></td>
</tr>