You can use NA Bulk Price Editor to edit Shopify “Cost per item” with bulk price change rules
First, enable “Show cost per item edit options in price change jobs” from the app settings page.
If you cannot see this option, please email support@northern-apps.com.
A new setting to edit cost will now appear in price change jobs. You can now edit any combination of price, compare at price, and cost.
If you have any questions or feedback, please email chris@northern-apps.com