Many of our titles are overstocks or remainders which means they are often end of line and in limited supply. These titles appear in our printed monthly catalogue which is enjoyed for several months even when new ones are released. We therefore keep out-of-stock items on our website to ensure that our catalogue customers can find the titles online and sign up for back-in-stock notifications. We work hard to bring popular titles back into stock and offering back-in-stock notifications helps us to know what our customers would like to read.