How to enter cost of goods before item sells

[swiowalady]

I'd like to enter my cost of goods as I aquire them. 

I'm new to Excel and to Mycostpro, so my learning curve is steep.  :-)  Thank you for the teaching and advice!

[Scott]

You will want to put this information in the Product Master tab, and when the items sell, it will pull that information into the sold item tab automatically (linked together by either the SKU or the Listing Title). 
Let me know if you have any trouble!