Haven't gotten the bill yet. She rode in coach all the way from ORF-ORD-HNL-GUM on L-UAL so I'm hoping it was all no charge.
The GUM-MNL leg was on U-Con. When I listed her a screen popped up that said something to the effect of, "if you hit the confirm button you are going to be billed $44".
This is our first try at this, so I don't know if that's what's going to happen. I listed for business class but it filled up so she got a seat in the back.