X-link to the DRM-free thread for a bundle which includes some audiobooks:
Humble Book Bundle Neil Gaiman contains 3 audiobooks: 1 of live performance readings by the author himself at the $8 middle tier, and 2 at the $15 top tier for more dramatic readings of his own works. There's also a whole bunch of rare prose, poetry, and graphic novel work from the popular Hugo Award-winning author.