Here is another way to look at it: If my son is going to get the exposure to the schools he is interested in without going to these showcases, what do I do? Well, I realize a majority of scholarship players get "books", maybe $500 a semester, if that. So, I have to decide if I want to spend that $500 many times at these showcases if he can get the exposure less expensively. Also, if I save that $500 many times, won't this help pay for more than books when he gets that "books" offer? In my case, he can get the exposure for the school he wants without the expense.
But, everyone has to determine what is best for their situation... or if their son has even narrowed his choice to a few schools yet. My son has never been to a showcase that cost money and he has interest/offers from DI schools. He has already made a decision, but chose to go the Juco route for a few years. He is very happy with his choice.