I think they could do better with the endowment they have.
Yes, it’s tuition and fees only. If integrated with federal aid, including Direct loans, it’s not going to cost the school that much. It also isn’t going to be helpful to those students who are accepted but live too far to commute since room, board, books, travel, living expenses can add up to $15-18k.
For such students, commuting to their local college is the only affordable option unless they seek financial and merit money from other schools.