I noticed that as well when looking to buy tickets. Not sure why Cathy Pacific does that but I decided to go with United and like another posted, they only charged about 10% of what a regular ticket would cost. Not sure why because they are on your lap. If you really want to fly Cathy Pacific, I would just buy regular tickets for your two children and put them in carseats. When I flew United, I was lucky enough to get bulk head seating with an empty seat beside me and I put my 3 month old in a carseat beside me and she had never slept better; the whole trip she just ate and slept. On the way back she was a little older 4.5 months and we held her which wasn't near as easy and she cried for almost five hours until we got a bassinet to put by our feet, then she slept. Hope that helps.