365 Books for $240 & Infinite ROI

What if you wanted to listen to a book each and every day of the year? What's the lowest cost to be able to do something like that? A few years ago I tried to do just that. Browsing Amazon and Barnes & Noble I was able to find some of the best books in many different genres. And then I listened to some of them on my library app called Overdrive and many more on audible. What could you do in life if the initial cost was zero or very low? How much more could you invest and how much would your ROI be?