Home Slickdeals Kindle Classic Sci-Fi eBook: The Caves of Steel (The Robot Series Book... Slickdeals Kindle Classic Sci-Fi eBook: The Caves of Steel (The Robot Series Book 1) by Isaac Asimov – $1.99 – Amazon, Google Play, B&N Nook, Apple Books and Kobo By ARCOM - 8 March 2021 71 0 SHARE Facebook Twitter Go to the deal page: Kindle Classic Sci-Fi eBook: The Caves of Steel (The Robot Series Book 1) by Isaac Asimov – $1.99 – Amazon, Google Play, B&N Nook, Apple Books and Kobo