As I'm sure I've mentioned a time or two, I adore both of Michael Pearce's historical series, his Mamur Zapt series, and his "Dead Man in" series. But most of the Mamur Zapt books don't seem to go on sale very often, so it's nice to see the fourth one,
The Mamur Zapt and the Men Behind, drop to £0.99 at Kindle UK.
Kindle UK:
https://www.amazon.co.uk/dp/B0758Z35YG
Kindle UK/Smile:
https://smile.amazon.co.uk/dp/B0758Z35YG
And, since I'm talking about this series, the seventeenth one,
The Bride Box, is $1.99 in the US. This one is one of the few that drops in price a lot, but since I was talking about the series, here's the info on that one again too. (And it's discountable at Kobo US...)
Kindle US:
https://www.amazon.com/dp/B00DN8GOW4
Kindle US/Smile:
https://smile.amazon.com/dp/B00DN8GOW4
Kobo US:
https://www.kobo.com/us/en/ebook/the-bride-box-1