Century 21 is the best that we've found. Right across the street from Ground Zero, the World Trade Center site in lower Manhattan.
Good prices and NYC does not charge sales tax on most clothing items under 110 dollars. Very crowded but some bargains there to be found.
Here is their website: http://www.c21stores.com/
Hard hit by the economy, there are still numerous sole proprietors with buy/sell, apparel, discount shops and 99 cent stores throughout the 5 boroughs of NYC. Focusing on 'places', 'neighborhoods' and 'streets' in Manhattan* where bargains*** may be found:
Keep in mind, you can find items for sale from the upscale in mint condition to items that fell off a truck, came off a fishing boat, got hit by a bus - you name it on the streets of Manhattan. It's not the bazaar of Marakesh, but always be a streetsmart shopper.