Thought I'd recommend some good speculative fiction that I've enjoyed reading. These books all link to Kobo Books for Adobe EPUB, but they can be found at most ebook stores. These all cost around $6-$7, except Stephen King's The Stand, regarded by many as his best book (me included).
If you have any ebook recommendations feel free to send me an email and I'll post them here.
Update: Did some checking and found The Stand is much cheaper at Amazon and B&N at just $8.09. But both are locked-in to their respective devices/software. Kobo is still the cheapest for Adobe EPUB at $14.49. And some other websites are charging as much as $25 for the ebook. Highway robbery at its finest.