Camp Half-Blood discussion

Hi all, I'm excited to be part of this site as I recently (2-3 years) now have really begun enjoying reading/listening to books. I have an issue though. At work i can listen to about 6 hours of an audio book a day and at that rate, I've kinda burned through the books at my local library. I know Audible is out there but as i understand you get 1 book a month and i will finish that book in 2-3 days. That leaves a lot of bookless days in my month. I don't have the money to buy them and I don't like torrenting. Any suggestions?