Most of the titles in the Simon Puttock/Sir Baldwin Furnshill (Knights Templar) series by Michael Jecks have dropped to between £0.99 and £2.99 each at Kindle UK. They are mostly £1.99, with several at £0.99 and a couple at £2.99. I have fond memories of picking up the early titles in this series in paperback (before e-books) while in the UK on business trips, and then reading them on the plane on the way home. The “master” link below picks them up (including a few strays), except for the 23rd book, Dispensation of Death, which seems to need its own link (???).
series: Kindle UK
Dispensation of Death: Kindle UK
The Last Templar is the first in this series. It has dropped to $0.99 at Kindle and Kobo US, and it’s discountable at Kobo.
Kindle US: https://www.amazon.com/dp/B0844TFM54
Kobo US: https://www.kobo.com/us/en/ebook/the-last-templar-10
Templar’s Acre is the last book, at least for now, in the Puttock/Furnshill series, although it’s actually a prequel…
It has dropped to £0.99 at Kindle UK: https://www.amazon.co.uk/dp/B08V8RRHBN