I went to MSDI 2 Week (don't ask me who I am, I won't tell), and it was not worth the money. Although it is cheaper, the quality is not sufficient for a debate camp.
1) Although website says the camp focuses on practice debates, the debates are generally not well administered the post-round critiques aren't great.
2) The amount of learning at MSDI is minimal, and the education you do get is pretty elementary- not for the advanced debaters or 2nd year+.
3) The college debaters that semi-help with the camp blow it off and don't treat it seriously. That nulls the experience of having good debaters teach you.
4) MSU isn't the prettiest campus.
5) Compared to other camps in the midwest, like Jayhawk, Northwestern, SDI, and Kentucky, MSDI is pretty low-ranking and insufficient.
However, MSDI is great for lay debating, if that is what you're looking for. That is what the camp is kind of based on, to improve MO debating. But overall, not that worth it.
Go SDI or UMich