Most of the titles in the Dorothy Martin series by Jeanne M Dams are $0.99/£0.99 at Kindle US and UK right now, February 11, 2021. I remember reading and liking the first few titles in this series in paperback way back when, and I then sort of lost track of it. It appears that Joffe Books, which appears to do a fair amount of e-republishing, and also some publishing of its own, has the rights now, and they do a fair amount of discounting from time to time. By the way, according to SYKM, the first title in the series, The Body in the Transept, won the 1995 Agatha Award for Best First Novel.
Rather than providing individual links to a lot of titles, I’m posting links to the whole series, and you can take a look for the titles you need/want: Kindle US | Kindle UK
The Dorothy Martin Murder Mystery Box Set, Books 1-5 contains: The Body in the Transept (which won the 1995 Agatha for Best First Novel), Trouble in the Town Hall, Holy Terror in the Hebrides, Malice in Miniature, and The Victim in Victoria Station. It’s on sale for $0.99/£0.99 right now.
Kindle US: https://www.amazon.com/dp/B09XBD1LG4
Kindle UK: https://www.amazon.co.uk/dp/B09XBD1LG4
The Body in the Transcept is the first Dorothy Martin title. It’s free right now at Kindle US and UK.
Kindle US: https://www.amazon.com/dp/B08JVKFM1W
KIndle UK: https://www.amazon.co.uk/dp/B08JVKFM1W
If you didn’t buy it when it was cheap many months ago, now The Dorothy Martin Murder Mystery Box Set, Books 1-5 is free at Kindle US and UK. The links and info in the first comment up above are still good…