Thanks guys.
Not exactly what I wanted to hear, but nice to know that it is a waist of time and money to hunt retro games in nyc. I was really hoping to finally get chrono trigger, super mario rpg and mega man 6, since these games never made their way to Europe. C'est la vie.
The stores I found chargede more for standard games than any retro shop I have come across in Europe, which was a bit of a chock. I have always thought of the States as the best an cheapest place to go retro hunting - apparently that does not go for New York.
Appreciate the help, thanks.