The Automatic Detective by A Lee Martinez
Doomsday Book by Connie Willis
The Stepsister Scheme by Jim C Hines
Howl's Moving Castle by Diana Wynne Jones
Blindness by Jose Saramago - currently $6 but usually more
Accidental Sorcerer by KE Mills
And just about any Discworld book by Terry Pratchett
Since you didn't give any taste guidelines I just picked some random ones that I enjoyed.