Amazon and Google Play have the eBook edition of The Three-Body Problem (Remembrance of Earth’s Past Book 1) by Cixin Liu for $2.99
https://www.amazon.com/dp/B00IQO403K
https://play.google.com/store/boo…NzAwAAQBA
If you love hard science fiction even a little, I cannot recommend this book (and series) highly enough. The scope and scale of Liu’s storytelling is beyond anything I’ve experienced in decades of reading asnd I guarantee you’ve never read anything like this before