Buffalo Exchange
332 E. 11th Street (between 1st Ave and Avenue A)
or 504 Driggs Avenue, Brooklyn (at 9th St)

Buffalo Exchange is a chain thrift store where hipsters can sell clothes for money or store credit to buy other hipster cast-offs. I’ve been to both NYC locations and one in San Diego, and all I can say is the goods seriously depend on the neighborhood. The Williamsburg location is trendier and overall has better clothes, but it’s a bit more expensive, they don’t buy back as much of your stuff and the staff isn’t very nice. The East Village store is much smaller but a lot friendlier, and despite the lack of brand names I’ve found really awesome goods. It’s crowded on a regular basis, but the Village store gets a lot less traffic so cool items are easier to come by. It’s worth checking out, but a word to the wise: don’t expect to find exactly what you’re looking for there; it’s one of those places where you go in with good intentions and come out with an armload of stuff you want but don’t need.

**note: there is also a brand new Chelsea location at 114 W. 26th St.