Columbia University Bookstore (Morningside Heights)
The Columbia Bookstore, located in the basement of Lerner Hall, is basically a Barnes & Noble dressed up with Columbiana. You can get Columbia-branded shit of every size, type, and quality here...and get your parents to pay for it by using Flex.
A second bookstore, serving the Columbia University Medical Center is located at 3954 Broadway. It, too, is basically a Barnes & Noble dressed up with Columbiana. Prices on Columbia-branded shit is typically cheaper here than the Morningside location. It can be found just south of the 168th Street subway station on the (1), (A), and (C) trains.