I'm not sure how to reply. I coached at the small college level. We were very competitive. We worked hard trying to recruit the best possible players. We had no athletic money to offer. Every person that contacted us showing interest was followed up on.
Most DIII coaches are going to look at anyone that shows interest in their school. Most DIIIs can't afford to ignore a potential student athlete.
Nothing wrong with attending a showcase. I was responding to the original post. I doubt that it would be worth all the money it takes traveling half way around the world unless the player was going to standout. Just trying to be honest, a pitcher throwing 76-78 is not likely to stand out. Once he gains more velocity it's a different situation.