Let me provide information about this, Eve. 

Shipping or freight charges can be an expense or a Cost of Goods Sold (COGS) relative to different situations.   

We can consider shipping charges to be part of COGS when they relate to the production of a product. However, if the costs are associated with transporting the finished goods, it is categorized as an expense. 

Regarding your concerns about determining your shipping costs by whether they are expenses or COGS, I suggest you consult an accountant for expert advice. This way, we can ensure you are on the right track.  

Furthermore, check out this article to learn how to personalize your sales forms: Use and customize form templates. 

I'm still all ears for any queries about managing your shipping costs. I'll be here to assist. Keep safe!