A bunch of random titles on sale at Kindle UK, either £0.99 or £1.00. Most of these are probably from the monthly sale, but if you see one you want, don't wait - it might not be...
The Stone Circle, Ruth Galloway #11, by Elly Griffiths, info and links in this previous post:
https://www.mobileread.com/forums/sh....php?p=3890280
Golden In Death, Eve Dallas #50, by J. D. Robb, links in @JSWolf's previous post:
https://www.mobileread.com/forums/sh....php?p=3989408
Thin Air, Shetland #6, by Ann Cleeves:
https://smile.amazon.co.uk/Thin-Air-...dp/B00JPCCJEO/
A Bird in the Hand, George & Molly Palmer-Jones #1, by Ann Cleeves:
https://smile.amazon.co.uk/Bird-Hand...dp/B00EKHI9BQ/
The Snowman, Harry Hole #7, by Jo Nesbo:
https://smile.amazon.co.uk/Snowman-H...dp/B0038AUY96/
Vanish, Rizzoli & Isles #5, by Tess Gerritsen:
https://smile.amazon.co.uk/Vanish-Ri...dp/B0031RS75Y/
The Big Bad Wolf, Alex Cross #9, by James Patterson:
https://smile.amazon.co.uk/Big-Wolf-...dp/B004WJRTWC/
The Body on the Beach, Island Mystery #1, by Anna Johannsen:
https://smile.amazon.co.uk/Body-Beac...dp/B07PLHLDXM/
Death on the Beach, Island Mystery #2, by Anna Johannsen:
https://www.amazon.co.uk/Death-Beach...dp/B07ZYMRFMR/