Our Case configuration feature works for having the quantity automatically rounded to the amount of QTY per case, however, it does not include the option to enter the cost price for the case in total. You can do the following steps to have the case configuration with the cost price properly displayed on your PO: 

• Upload a file for your case configuration. This will only affect the quantities on the PO. Click here for an article on how to do this.
• Now you can upload a “product information” file that includes the SKU, Supplier, Cost per unit, and Vendor SKU. 

Now, when you will place a PO, the quantity will automatically be rounded to the case qty and you will see the price per unit will automatically be multiplied based on your case configuration.