I wish you could add a Column on the Invoice where we could click for a markup percentage on products. The billable expense feature doesn't work for how we do our invoicing. We write out each part on the reciept so the customer can see how much each item was but we use way too many different types of products that it doesn't work for us to use the parts/sales feature either. I would also like the percentage to be hidden on the customer view as well. Thanks!