Hi 

First of all, thank you for making such an amazing product. We use books for my business and so far it s been great. 

I have a question, on the item account type:

What  is the difference between "payment provider" and "cost of product sold" ? 

Basically when i buy a product from my supplier how to i integrate it on the item? Logically it should be a "cost of product sold" It s not very clear for us.

Can you help?

Thank you