The Lord of Opium is still on sale for just $1.99. You have to go get it. It is the second book in Nancy Farmer's Alacran Series, but the first was fantastic.
A boy has an idyllic life with a wonderful woman, but he is forced to stay out of sight all day while she goes to work. When he is caught outside one day he learns that he is a clone of the drug lord of the opium farm. It is in the future and to control the drug trade, the US and Mexico have laid out a five mile strip of legal drug farms between the two countries. Everything seems perfect, but it is not.