Initially, while book prices were too high for the average reader, they were sufficient to cover the costs of the publisher and to pay reasonable amounts to the authors. But as free-to-use libraries sprang up all around the country, people started flocking to them. Authors and publishers looked for ways to cut prices and increase sales. Serialisation in periodicals, especially literary magazines though not newspapers, became popular. Quality illustrations were commissioned from the reputable artists of the time as an incentive to purchase. Income from writing increased for some writers, and many became professional novelists.