X-link to the DRM-free thread for an sfnal bundle:
Humble Book Bundle Neil Gaiman features mainly stuff related to the Hugo Award-winning author's comic book work, but there are a couple of collections included which contain several sfnal prose pieces, and two audiobooks and a live performance video of him doing dramatic readings of some of his short stories.
And for
Babylon 5 fans, there's an annotated version of one of his scripts for the TV show.