If are able to access your variable through {{ $material_details['pricing'] }} inside your blade file,
, тогда это будет работать для проверки и добавления значения:
{{ ($material_details['pricing'] == "null") ? "null value" : $material_details['pricing'] }}
Для проверки и добавления элементов:
@if($material_details['pricing'] != "null")
<tr>
<td>price is not null</td>
</tr>
@endif