With this plugin you can bulk edit simple or variable woocommerce products fields/info such as SKU, Stock, Regular Price, Sale Price, Weight, Height.

  PLEASE NOTE: This plugin is NOT made to bulk edit, add or change custom attributes, variations or product information. It is made to bulk edit product fields on already existing (see above) simple or variable products.

Demo:https://codecanyon.net/item/woocommerce-bulk-edit-variable-products-prices/6822726