That puts it well beyond the reach of the vast majority of NYC residents.
You can't carry in like 90% of Manhattan even with the permit. Even carrying in your own apartment is prohibited without an additional permit.
It's no different than how states used "Poll Taxes" and "Tests" to circumvent the 15th Amendment before the Civil Rights Movement. NYC thinks they are above the law and does everything they can to circumvent it.
Handguns have to be transferred across state lines to a FFL in the state where the transferee resides.
The way straw purchases work for handguns is mostly that a family member who can legally purchase the firearm does.
But if you are talking cross state border sales, which are not the majority even though it’s an oft quoted trope, a resident of Indiana buys a lot of guns, then sells them illegally in Illinois. Precisely because you can’t easily buy a handgun in a state you don’t reside in.