Export orders with purchase price (meta key needed)

Hi,

I’ve been using this plugin for stock inventory and it works great. Recently, I need to export orders with purchase price using Advanced Order Export For WooCommerce. That plugin does not seem pick up purchase price field but it allows us to add fields from meta key. So, I wonder if there is a meta key for purchase price that I can use?

By the way, it’d be a good idea to add sales profit into Dashboard based on purchase price and selling price.

Thanks.