Append isn't working

I am trying to append a table with data from another page that is in json form

Here's my code to append

   $.getJSON("<?php echo URL;?>/dashboard/sellorders", function(data)
{
    $.each(data.result, function(){
    $("#sellingorders").find('tbody').apend("<tr><td>"+this['price']+"</td><td>"+this['amount']+"</td><td>"+this['cost']+"</td></tr>");
})});

   <div id="example-2_wrapper" class="table-responsive dataTables_wrapper form-inline dt-bootstrap no-footer">
        <table id="sellingorders" class="table table-bordered table-striped dataTable no-footer " role="grid" aria-describedby="example-2_info">
          <thead>
            <tr>
              <th>
                <?php _ex( "Price"); ?>
              </th>
              <th>
                <?php _ex( "Amount"); ?>
              </th>
              <th>
                <?php _ex( "Cost"); ?>
              </th>
            </tr>
          </thead>
            <tbody><tbody>
          <tfoot>

Yet none of it is appending, no data is being added to the table.