The books are all available separately at 25% off as well. You can browse books by artist here:
David Zwirner is an art gallery with locations in New York, Los Angeles, London, Paris and Hong Kong. We present physical and online exhibitions, podcasts, books, and more.
www.davidzwirner.com
I assume they create these gift bundles to make it easy for people who may not know much about art themselves to buy books for their art-loving friends/family. "Hey, Jim is into photography, let's buy him a bundle of photography books"
I've personally got all of the Arbus, Eggleston and DeCarava that I need, but I'm a big fan of Joan Mitchell's work and will probably pick up
this.