Microsoft's Lumia Offers app for Windows 10 Mobile has added a new offer that allows users to get two free audiobooks for free from Audible with a 30 day free trial.
Normally, Audible offers just one free audiobook for its trial, so getting two is twice as nice. Of course, new Audible customers can cancel their membership before the free trial end and keep their two audiobooks. There are over 200,000 audiobooks to choose from in the Audible catalogue and more are being added every day.
Thanks to Michael for the tip!