@foreach($sum as $row)
<tr>
<td>{{ $row->source }}</td>
<td>{{ $row->where('source', $row->source)->where('type', 'Нал')->sum('price') }}</td>
<td>{{ $row->where('source', $row->source)->where('type', 'Безнал')->sum('price') }}</td>
</tr>
@endforeach