Still NOT part of QBO.   
Dear QB, 

Let's make this very simple.  
Go open QB Desktop.  Create an invoice or estimate.  
You will see item cost, markup (which can be percentage or specific amount) and selling cost.

It's that simple.

Whereas - if you open QBO and try to do the same, there is only Selling Cost as entered into the Products and Services section.

Why is this important?  
Perhaps I'd like to give a customer a discount to match some online price, but I don't want to go below my costs.  I shouldn't have to open 2 or 3 windows to see product costs just to figure this out.

Also - I'd like to know my margins while I'm creating estimate or invoices - JUST LIKE DESKTOP.

Now then, please go fix this.  It's been requested for months or longer.

Any response other than specific solution and resolution date is wasted response on your part.

Regards.