Co-op rules, financials, etc., are always provided to your attorney for review before the contract is signed. In some developments this information is only released to the attorneys and not the agents; therefore make sure you hire an attorney who is familiar and has done co-op transactions.
That is ridiculous. With every co-op I have been involved in a copy of the prospectus, the financials, and the rules are required by the buyers attorney before contract. You attorney probably won;t let you go into contract without these. This does not sound on the up and up to me.
Call the management Company which should be listed with phone number on the listing sheet and ask for a copy of the co-op house rules for you to inspect. You can also ask for the financials. You should not have to wait until you are in contract. Need a good agent. Visit my web site PaulMVPteam.com.