It's a good gym, but its enormous. It is very crowded in every class. It's true Renzo never teaches but the other instructors there are very good. Rafael Lima pretty much runs the place. I pulled him aside and asked him how to improve my mount and he spent about 15 minutes with me explaining some of the fundamentals. Rolles, Igor, and Gregor Gracie are there pretty much everyday. For girl, Kyra Gracie shows up for a few months out of the year and teaches the classes. Renzo is Kyra's favorite uncle or something. However, my favorite instructor is a dude name Magno. His teaching ability is awesome. He just explains things in very detailed fashion and he can take one look at you and immediately explain what you are doing wrong.
I haven't been there in a while but I was billed $190 per month on my CC. I asked about the Muay Thai and then wanted an extra $60 per month for a $250 total. There is a caperioera class as well but that is just distracting because it is filled with Brazilian models living in NYC.
I'm training at Brasa right now in Rio and I can honestly say that I prefer Brasa. Richardo Vieira teaches two classes a day and it's small enough that you get a lot of personal attention. Plus, the mix the different belt colors with one another which I like.
Hope that helps.