FYI-A buyers broker is a service that comes from the building or seller's side of the transaction.
BTW: Prudential Douglas Elliman has a number of great certified buyer agents serving Astoria, Sunnyside and other Queens neighborhoods.
If you wanted to have a buyers agent they would look out for your best interest. Also since you are a first time buyer they could also help you with the offer.
If I can be of any help let me know. I also work in Queens.