I'll repeat the advice we received (that I shared earlier on another post) that we found to be excellent.
Unless your son is an exceptional young player, resist the temptation to go to showcases. If you want to spend money, which is necessary to some degree to advance as a player, spend it on training. Find a place that will help him get bigger, faster, and stronger. If you go to camps, find those that teach fundamentals for the purposes of development.
Once a kid has developed his skills, then you can find good places to showcase the talent for exposure, like at PBR and Perfect Game showcases.
I'm not sure how close you are to Cedar Rapids, but I just got an email earlier this week from Perfect Game that they are doing once-weekly training sessions for 17 weeks beginning in early November. They intend to work on swing and plate approach, including the mental approach at the plate, as well as defensive footwork and position-specific training. Pitchers will shut down arms for a stretch but will do a lot of strength/conditioning as well as dry mechanic drills.
Several PG alumni will be involved including Scott Schebler, Mitch Keller, Jon Keller, and others, and the program will be small group with low player to coach ratio.
I'm not sure if anyone can sign up or if it's just for players on the Iowa Select teams, but it may be worth looking into if it's convenient for you.
If you can find other ways to accomplish this in a facility more convenient for you, that'd be awesome. But, in my opinion, get better first before concerning yourself with showcases.