Для Prestashop 1.7.8 если не хотите переопределять классы и шаблоны в модуле, можете добавить показ поля в админке изменив файлы
/src/Adapter/Product/AdminProductDataProvider.php
public function getCatalogProductList(
...
$sqlSelect = [
'id_product' => ['table' => 'p', 'field' => 'id_product', 'filtering' => ' %s '],
'reference' => ['table' => 'p', 'field' => 'reference', 'filtering' => self::FILTERING_LIKE_BOTH],
'price' => ['table' => 'sa', 'field' => 'price', 'filtering' => ' %s '],
/* Добавляем */
'wholesale_price' => ['table' => 'sa', 'field' => 'wholesale_price', 'filtering' => ' %s '],
/************/
/src/PrestaShopBundle/Resources/views/Admin/Product/CatalogPage/Lists/products_table.html.twig
............
<th scope="col">
{{ ps.sortable_column_header("Category"|trans({}, 'Admin.Catalog.Feature'), 'name_category', orderBy, sortOrder) }}
</th>
{{* Добавляем*}}
<th scope="col" class="text-center" style="width: 9%">
{{ ps.sortable_column_header("Wholesale price"|trans({}, 'Admin.Catalog.Feature'), 'price', orderBy, sortOrder) }}
/th>
{{*******}}
<th scope="col" class="text-center" style="width: 9%">
{{ ps.sortable_column_header("Price (tax excl.)"|trans({}, 'Admin.Catalog.Feature'), 'price', orderBy, sortOrder) }}
</th>
.........
/src/PrestaShopBundle/Resources/views/Admin/Product/CatalogPage/Lists/list.html.twig
.......
{{* Добавляем*}}
<td class="text-center">
<a href="{{ product.url|default('') }}#tab-step2">{{ product.wholesale_price|default('N/A'|trans({}, 'Admin.Global')) }}</a>
</td>
{{*********}}
<td class="text-center">
<a href="{{ product.url|default('') }}#tab-step2">{{ product.price|default('N/A'|trans({}, 'Admin.Global')) }}</a>
</td>
<td class="text-center">
<a href="{{ product.url|default('') }}#tab-step2">{{ product.price_final|default('N/A'|trans({}, 'Admin.Global')) }}</a>
</td>
.......