My comments to the OP is to be aware of the HAND that is reaching out to help you.  

I'm going from NC state specific information since the OP claims he is in NC.

The seller is contractually obligated to pay the listing broker and the listing broker agrees to share whatever amount they feel with the buyers broker.The amount stipulated will be in the listing agreement the broker had the seller sign along with the co-op amount to the selling agent.If you want to do more you can refer business and also add more of your own money as a bonus to the selling agent.You want to make sure the agent is not on a 50/50 split and can keep it all.

I spent about $200 to add Gas / Electric / Water lines in the basement for washer / dryer hookups to BOTH units (and remove Coin-Op) and immediately after that, the interests increased.

Working with Rosario Candela, the group proposed an asymmetrical assemblage of Gothic-, Tudor- and Venetian-style towers, with its own garage underneath a 10,000-square-foot waterfront courtyard.A medieval-style drawbridge at river level dropped to a boat landing for co-op owners, and a bridge was to connect the swanky complex to Beekman Place, to the north.

I probably didn't ask my question in my OP correctly and that is my fault.

I imagine the OP is in that boat.

The OP is correct about people conflating the return the money is making with what THEY are making by being actively involved.  

The OP was about qualifying for a rental; we have another forum for renter issues. 

To quote him he stated:A 1000 sq.ft condo that is worth 600K implies OPs expected selling price of $600/sq.ft