Here are some quick links to most of the F/SF 99 cent deals this week for Simon & Schuster imprints at Kobo. The same titles should be on sale at Amazon, too.
Adams SF
Atria SF
Gallery SF
Pocket Books SF
Scribner SF
Niven & Pournelle's The Burning City is one of them at Atria, and there are a couple of John Christopher juveniles at
Aladdin, including When The Tripods Came. I think I'm also going to pick up
Asian-Pacific Folktales and Legends, too.