Having just raised the ceiling in my house, there are a variety of things. Taller walls tend to come with taller windows. Not just more glass... sometimes whol

Having just raised the ceiling in my house, there are a variety of things. Taller walls tend to come with taller windows. Not just more glass... sometimes whole extra windows (transoms) which cost almost as much as the much larger ones below. Taller cabinets or soffit details to receive them. More elaborate trim work. etc. For a flipper or a production builder every dollar is saved because it adds up in the end. If there's a high ceiling it's because it's been determined to command a good profit.