I live in NJ and stopped using Amazon. I started getting charged tax, and then my Prime expired. I tried to buy something and when I saw the price skyrocket almost $10 because of shipping/tax I realized it wasn't the great place it used to be.
It actually is still great. After 1+ years on a stroller and almost 2 years on a video monitor, amazon replaced both free of charge after issues arose. Their customer service brings me back all the time even after charging Texas tax.