A member at adminforum.in is of the view that NodeBB hosted forum is pretty expensive when compared to IPB and vB
If you have the numbers just post them.
I dont see how they can complain when it is really so much cheaper to host on your own.
The numbers listed in the pricing page is actually out of date. They were measured using NodeBB v0.5.0
v0.6.x and beyond support much higher concurrent user loads, so we'll be updating these numbers to reflect the increased scalability.