How to change the purchase price of all the products in Excel?

To change the purchase price for all the products in Excel, please go to Products & Services section >> Click on the drop down (Beside Actions button) >> Download items >> Open the downloaded file >> Remove the
value from Price/Price with tax column >> Remove the input from the Quantity column >> Update the Purchase price in any one column (In Purchase price/ Purchase with tax) and remove the value from other column of purchase price >> Save the file >>Upload the file in Swipe app.