You need to speak to your listing agent about this. If your sale listing has not been canceled or expired, you can't rent it on your own or change brokers.
Payment to the REALTOR is considered commission. NJ states that all commissions are negotiable. In the area where you live, real estate fees to the real estate agency are often paid by the tenant. However, just as you've found with trying to sell your unit, you need to be aware of the competition you face, both from properties offered for rent by agents and those offered privately. The fee collected on a rental both reimburses the agent for the expense of marketing the property, it is how the agents earn their living. Someone needs to pay it. At the same time, the monthly rent for a large, luxury apartment is quite high. A new tenant usually must come up with the equivalent of 3 - 4 months' rent. (The 1st month's rent, up to 1.5 months as security deposit, and whatever you and the agent agree upon. Also, I'm sure the Galaxy have move-in fees). Your unit will look far more attractive to potential tenants if you cover all or part of those expenses. Also, if you choose to have your agent manage your rental for you, that is a separate fee.
To summarize, all real estate fees in NJ are negotiable, by law. Who pays them is something you should also discuss with the agent and weigh whether expecting the tenant to pay the whole fee will limit the rentability of your unit.
Joan Prout, MBA
RE/MAX Villa REALTORS
306 Grove Street
Jersey City, NJ 07302
800-671-0596 x1 (direct)