D1 Lacrosse schools fund 12.6 scholarships.So very few if any players get a 'full ride' on a team.
Of those 12.5 scholarships. In lacrosse a coach can break them up anyway they wany - 1/4, 1/3, 1/2 or full. The average scholarship from a D1 school is between 6 to 8k. Subtract that from a $40,000 bill the 529 plan will still need to fund the rest.
These clubs can't predict your son will get a scholarship or anything like that. You as a parent need to do 98% of the work in communicating with coaches, setting up interviews, creating video, etc. These clubs at best will give your son some visability at good tournements if your luckly to get into them. Don't expect the club to do anything more then set a tournement schedule, some coaching and a platform maybe for a coach to see them. But if you don't tell the targeted college coaches who your kids is and looking for them at a specfic tournement its all for not.