That's fine. If you are looking for a large space with custom fit mats, a shiny locker room and a pretty girl behind the desk, fine. But you are going to pay for it.
No different that a regular gym. You can pay a high price for a state of the art facility, but it's not necessarily going to get you any stronger than a barbell in a garage.
It's not about him and what he is worth; it is about you and what is best for you. You can go to a huge class taught by a pseudo-famous jiu-jitsu guy without ever getting a lot of individual attention for $200/month. Or you can go to a class of six guys run by a good brown belt, and basically every class is a one on one for $80/month.
It's really like buying a car. Sure, you can lease a new Mercedes for $500/month, but is that really the best value out there?