Amazon are offering a free 3 month trial of their Kindle unlimited service.
Even if you don’t have a kindle you can simply download the kindle app to take advantage of this offer.
After the three month trial the cost per month is 7.99 / month, though if you can cancel before you’re billed you should be fine.
With over 1 million titles available on Kindle you should have more than enough reading to keep you busy!
Full details here.