If you're not averse to science fiction and fantasy, about a month back someone else asked for
recommendations for using up their FW Micropay balance and there were a lot of books suggested. Some of them are award-winners, classics in the field, or both, and most were MultiFormat, so it probably won't be geo-restricted.
You seem to like stuff with a literary/thriller flavour, so maybe Lucien Shepard and Kurt Vonnegut, and possibly some Harlan Ellison and Philip K. Dick could be to your taste. There's also the Chris Beckett rec, which I haven't read, but the person who did says it won a major UK literary prize, so it might be more your sort of thing.