For just a day or two, you should be able to get each of these books in Kindle for for two or three books:
The Sirens of Titan by Kurt Vonegut.
The Color of Magic: A Novel of Discworld by Terry Prachett
A Crack in Creation: Gene Editing and the Unthinkable Power to Control Evolution by Jennifer Doudna and Sam Sternberg.
Upstream: Searching for Wild Salmon, from River to Table by Langdon Cook.