is it normal to ask an agent what the noi is?

[Devin Mann]

On the Multiple Listing Service, agents who are listing multi families rarely have all the numbers that are needed to see if its a good deal or not. They dont even have what the rentals take in.

usually i send an email to the agent saying "how much are they charging for rent and what is the NOI". is that a normal question to ask over email? is there any reason why 90% of the realtors would keep that private