Youngerman123 – I based it off what others mention is the cost of renting the place out for concerts and other events. No reason to think it would be more than that.
Gadolhador – They can charge what they want. No complaint with that. Rather I am pointing out that it seems they are commercializing religion here. Whatever, I get it that those who pay more money or have money get feted by various events and whatnot, but I just don’t recall seeing it approaching this level of being in your face. And of course, the choice to go or not is mine. As to having adequate input from Ashkonim or Rabbonim, not going down that rabbit hole. Maybe this is just my opinion, but I think many of these institutions are run opaquely with little transparency or accountability.