Princeton Rev. or a private institute?

Hello,
I’m doing SAT prep during this summer!
I’m stuck between choosing Princeton Rev. courses that are offered at my own school(14 sessions TWTH for 3 and a half hours: $854), and a “kinda” private institude called Edu4u that is really really small and it’s a place that most of the tutors, students,etc are Korean, I think I’m the only one who is not Korean: (8 weeks, MTWTH, for 4 and a half hours: $3000, that I pay in 2 $1500s).
What should I do I don’t have any experience with any of them?!
I feel like Edu4U is gonna be more intensive and that’s what I want.
Let me mension that money is not an issue.
Plz help if you have any experiences with Princeton or Edu4U.
Excuse any typos!
Thanks!

It’s not necessary to do any prep course.

Neither of my kids did them, and both did just fine.

Anyone?