I found that you made an extra file to support GeekoDevs Universal Import Export, it's perfect and works great!
Is it possible to add the cost field's even in the Quick update section? See picture.
And one other question. Then adding from modules like GeekoDevs Universal Import Export, or changing in some other way, the profit column is not calculated. Is it possible to add some sort of "recalculate"-button so it's not neccesery to open product and direct save to get the product list look right?