There are several other open road deals on as well at the moment (probably today only and only in the US)
I haven't read any of these except the Katherine Kurtz book which I recommend if you haven't picked it up previously.
Check your libraries first as several have been discounted before.
Amazon links have been provided but most are available at kobo as well and possibly other stores
The Sheep Look Up, by John Brunner 99c
https://www.amazon.com/gp/product/B00J5X5LVQ
The Golden Horn, by Poul Anderson $1.99
https://www.amazon.com/Golden-Horn-L.../dp/B0170ZVJE8
Eternity, by Greg Bear $1.99
https://www.amazon.com/gp/product/B00J48FH2A
Last Summer at Mars Hill, by Elizabeth Hand $1.99
https://www.amazon.com/gp/product/B00CHW66E8
The Outlaws of Sherwood, by Robin McKinley $1.99
https://www.amazon.com/gp/product/B00OGWASB4
The Iron Dragon’s Daughter, by Michael Swanwick $1.99
https://www.amazon.com/Iron-Dragons-.../dp/B01E6HYNGE
Alien Sex, edited by Ellen Datlow $1.99
https://www.amazon.com/gp/product/B009193KBC
The Bishop’s Heir, by Katherine Kurtz $1.99
https://www.amazon.com/Bishops-Heir-.../dp/B01AYTUPYW