Work Space Mumbai Series: Footpath Library.
Books can't afford homes in this city. In Mumbai, the booksellers on the footpath provide the services local circulating libraries do in the rest of India. They also sell second hand books at 50 - 75% discount and you can always sell it back to them and get back at least 90% of the amount.
If you are a regular reader, they usually have a membership. The rate is flexible and depends on your bargaining skills.
See the full Work Space Mumbai Series.