Any suggestions on where to find affordable original artwork for sale on the streets of NY?

West Broadway and Broadway in SoHo, and the side streets in between, like Prince and Spring St

We got some great stuff from an artist outside the Met on 5th Ave this summer. There were quite a few there.

14th Street Union Square....double your pleasure the Christmas market is in full force too....but just north of the market you'll find the street artist!