Son spends time at TBR. Didn’t go until after his first year in college.
No change in velo and cleaned up some mechanics. Learned a splitter and command improved.
Made all League in a short stint in summer and had a great fall. Positioned to have a big role this spring.
The biggest gains IMO are between his ear lobes. TBR focuses a lot on the mindset of the pitcher. To me this takes some advanced knowledge about oneself to be fully effective.
Like the others unless you have a pain issue that needs to be dealt with you might consider using that money now to train and let puberty do its thing for a bit.
Good luck!!