Method 1:

Go to Inventory＞Click on Inventory List＞Select Merchant SKU＞Click on Bulk Actions＞Click on Update Cost.




 

Method 2:

Step 1: Click on Import & Export＞Click on import Merchant SKU＞Click on Download a Template.

Step 2: Fill out the file and save it＞Return to the BigSeller＞Select Warehouse＞Upload File＞Click on Import.