<table class="pricing-table">
  <thead>
    <tr>
      <th></th>
      <th>T-Shirt</th>
      <th>Shoe</th>
    </tr>
  </thead>
  <tbody data-diff-key="table-body">
    <tr>
      <td class="row-header">Cost</td>
      <td data-diff-key="tshirt-cost">$6</td>
      <td data-diff-key="shoe-cost">$15</td>
    </tr>
    <tr>
      <td class="row-header">Sales Price</td>
      <td data-diff-key="tshirt-price">$45</td>
      <td data-diff-key="shoe-price">$39</td>
    </tr>
  </tbody>
</table>