My publisher notified me of another sale on my Androids audiobook: 50% off, so it's just $10. The promotion runs through January 26th. (If you already have it / listened to it / read it: thanks! I hope you enjoyed it!) https://www.audiobooks.com/promotions/promotedBook/601285/androids-the-team-that-built-the-android-operating-system?refId=231533