app/views/spree/admin/sale_prices/_table.html.erb
<table class="table table-bordered" data-hook="sale_price_table" id="product_sale_prices">
<thead>
<tr data-hook="products_header">
<th colspan="2"> <%= Spree.t('variant') %> </th>
<th> <%= Spree.t('sales_info') %> </th>
</tr>
</thead>
<tbody>
<%= render partial: "variant", collection: product.variants_including_master, locals: {product: product} %>
</tbody>
</table>