Cost of Goods for WooCommerce

Hi. I have bought your Cost of goods plugin but it would be awesome if I could see the cost price directly in the categories and products pages in the front page / shop pages instead of having to go into admin area every time I have to see a cost price.

We have many customers calling by phone asking for special prices so it would be really easy if I could just check it directly in the frontpage when speaking with the customer on the phone.

It should only be visible for specific user roles like for example the admin user and hidden for anyone else.

Can this somehow be done easily like for example a code snippet in the functions.php or similar?
It should be displayed right under the regular price or sale price if the product is on sale.