Brooklyn Condo or Co-Op Conversion

[Christian Hutchinson]

Hi have a close friend who been living in Brooklyn for 11 years now.  His building is being converted from apartments to Condos or Co-Op.  They are offering current tenants $625K to purchase their places.  His is 1000 sq ft 1b/1ba. The place is right next to between Eastern Parkway and Empire. next to the BK Museum, Botanical Gardens, and Prospect Park. He wanted to know if we would be interested in purchasing it.  What are the typical monthly fees and taxes on a place like this?

Is this an unreasonable price?