Besides selling used bikes to people in boston they do programs for local highschool to learn to fix and earn bikes, and also send bikes and mechanics to train people around the world. You can get a bike here for around $200. They also do single speed and fixed gear for considerably more. They will find you a frame to fit you, and you can pick out the necessary components to be assembled on the bike. All the people are extremely knowledgeable and will help you through the process if you know nothing about bikes.