As mentioned in a previous post, I'll like to get more Pratchett Related books in e-book format.
While the main Discworld series is available others such as
Good Omens by Terry Pratchett & Neil Gaiman
The Science of Discworld by Terry Pratchett, Ian Stewart, Jack S. Cohen
The Science of Discworld II - The Globe by Terry Pratchett, Ian Stewart, Jack S. Cohen
The Science of Discworld III - Darwin's Watch by Terry Pratchett, Ian Stewart, Jack S. Cohen
The Turtle Moves: Discworld's Story So Far by Lawrence Watt-Evans
The New Discworld Companion by Stephen Briggs
Nanny Ogg's Cookbook by Terry Pratchett, Stephen Briggs, Paul Kidby, and Tina Hannan
The Wit and Wisdom of Discworld by Terry Pratchett and Stephen Briggs
And older books like
Strata by Terry Pratchett
The Dark Side of the Sun By Terry Pratchett
I do have most, if not all in Paperback and Hardback (some Multiple copies), and I WANT to buy a ebook version, but can't as its not available.
Its especially unfortunate as many of these are often not that easily available in book stores, or are shelved in a different section, making it had for new people just starting to discover Pratchett's Work.
And for fans reading his older non Discworld books give you a good idea of how his work has changed and evolved over the last 20 years. And of course they're a good read.