The Grave's a Fine and Private Place is the next to most recent (9th of 10) in the Flavia de Luce series by Alan Bradley, and has dropped to $1.99 at Kindle US this morning.
If you're into mysteries, especially historical mysteries, this is an excellent series, AND the wish list credit appears to work on this title, so you can pick it up for free if you have credit left. (At least, it worked for me, and I got it for free...)
Info in this post:
https://www.mobileread.com/forums/sh...28#post3863028