And some are pretty expensive- my kid’s high school was only about 400 for the season but I know of some well north of $1000. And those programs aren’t providing food except a week of band camp and travel is only four or five Saturdays on a school bus. At least one Independent WGI is $1600+, is weekend only and covers no transportation (except to Dayton), food or housing.
DCI is expensive but it isn’t for what’s covered. Many times, one issue is that kids don’t start planning and talking to their parents early when they first become interested. The last couple of years, Covid shutdown high school marching band programs so the pool of interested kids has dropped too. Hopefully, high school marching band will come back to full membership in a couple years and that will help.