If there is a big discrepancy between what was listed and what actual then the buyer may back out, or request a credit or price reduction.
With new buildings like 129 Harrison it's not uncommon for maintenance fees to change after a association is formed and all units have been sold from the developer. Sometimes developers structure maintenance fees to be low to entice buyers, but they can end up being too low to grow a savings account for the building.
I don't know what exactly is the situation with the building re maintenance fees but if you are seriously interested I would suggest you ask your attorney to confirm.
Hope that helps!