How do most college coaches feel about 7th to 9th graders who don't have a lot to show (I'll be polite and say "yet")? Do they find it a waste of time? Or do they think, "Ca-Ching! He'll help pay for our spring Florida trip." I'm distinguishing showcase type camps from instructional camps.
I took my son to a local mid major after 9th grade. He was 5'11" 135. Obviously stronger kids outclassed him. But he was consistent in his play. All I was looking for was him to understand the process and how much competition there is without leaving town.
Another time I watched a major conference program (back when Big East was major) run a showcase. It was a bunch of high school juniors. It was easy to see all but four players had no shot there due to bat speed or swing mechanics. I mentioned it to a couple of current players. They told me the four players I liked were invited post PG events. The rest were funding the spring trip.