Are you looking to buy or sell by the way?
If you are buying in NYC, you can save money by requesting a buyer agent commission rebate through discount real estate companies like Hauseit.
If you want to sell in NYC you can either go the FSBO route or list with a discount full-service offering. Again, you can work with a highly reputable team like Hauseit to cut down on the total commission bill. They offer a 1% full-service listing option.
I do agree that there are a number of unscrupulous real estate agents running around the city who may charge less but will do a terrible job of marketing your apartment. So before you hire a discount real estate agent, I suggest you do your homework and only consider working with a reputable team in NYC.