NJ does NOT have an exit tax it’s an old wives tale. There is a tax on PROFIT of $500,000 or more on the sale of a primary home ( many states have this ). I moved to PA five years ago, made a very nice profit on the sale of my NJ home, no tax. In PA if the property is your primary residence for 2 out of 5 years of ownership, you are exempt from up $500,000 (married couple) of profit.
I didn’t even know that was possible. I’m a little scared now.