Switch Girl!! - Vol. 3 Ch. 15

[MangaDex]

 

[Simpleton]

I thought the point with the competition was to save money, but a rough estimate has the costs for day 1 and day 2 be pretty much the same (since so many people will get a better room than before).

So maybe increased fun and excitement, but nothing staving off the high costs (unless the school will also cheat somehow).