Hello, I did some searching but I can't see to find an answer to this. Does anyone know of any brick and mortars in NYC that sell GPS pucks? I'm going on a road trip this weekend and it would be great to have. I didn't even know they existed until a few days again. Thanks!

You could try J&R and possibly B&H Photo.
JR.com: J&R Music and Computer World - Audio, Video, Digital Cameras, Camcorders, TV, DVD, iPods, Networking, Satellite, GPS, MP3, Notebooks, Apple
B&H Photo Video | Digital Cameras, Camcorders