<style>стили</style>
шапка
{for group in groups %}
<tr>
<td colspan="4">{{ group.category }}</td>
<tr>
{% for deal in group.deals %}
    <td>IMG</td>
    <td><a>TITLE</a>..</td>
    <td>
        <div class="price1">price1</div>
        <div class="price2">price2</div>
        ...
    </td>
        <div class="subcat">subcategory</div>
        <div>site url</div>
    <td>
</tr>    
{% endfor %}
{% endfor %}