College students are poor, mostly rent furnished rooms, and acquire their furniture from curbside trash pickup. If your business plan consists of selling AV furniture to students, I hope you already have plenty of money, because you’re going to lose a bunch of it. If this is a school project, tell your teacher they are ripping you off.
Apart from that, I agree with KFJ- asking a bunch of designers in a forum is not research. I still have a 27" CRT TV, but I wouldn’t recommend using that data point for anything.