Reports on profitability

[daichiz]

Hi, Im new to VM. Have been using it for about 6 weeks.
I am just wondering if anyone knew of an extension that would enable me to add the cost price of a product and other associated costs so that I could see reports of profitability of individual products, product categories, and the overall store.

It would be so good if when entering a new product i could punch in the unit cost, associated cost per sale- eg. paid search advertising cost per conversion (if you could plugin from Google Analytics for real time data then even better for automation).

Anything like this around?