Don\'t worry. They have that tax in NY and it is an honor system.
I Still pay no tax on internet purchases when the company you are buying from DOES NOT have a viable presence in your state.
You are supposed to declare the purchases at tax time but who the hell would do that. And this is only for sites that do not collect it. Huge companies like Sony and others like them have a presence everywhere and they collect sales tax when you make a purchase it is up to them to do it.