Some of the later titles in Kate Sedley's Roger the Chapman historical series have gone on sale reasonably often, but not the earlier ones. Now it seems as if Sedley may have gotten back the rights to some of the earlier titles, since the first five books are recently out (2021) in e-book editions from Canelo.
And right now, the first in the series,
Death and the Chapman, is on sale for $0.99/£0.99 in the US/UK, and also discountable at Kobo (new code, "Partners22" for 40% off works).
Kindle US:
https://www.amazon.com/dp/B099ZJ17DB
Kobo US:
https://www.kobo.com/us/en/ebook/death-and-the-chapman
Kindle UK:
https://www.amazon.co.uk/dp/B099ZJ17DB
The other four are also reasonably priced at £1.99 each at Kindle UK, $2.99 each at Kindle US, and $3.99 each at Kobo US. (But if you use the "Partners22" code at Kobo, they are 2.39 each, and if you have Kobo VIP, which stacks with the code, they are $2.15 each. Remember though, you have to put them one-at-a-time in the cart, and check out separately for each one, since "Partners22" is multi-use, but only once per cart.)
And here are series links for all five...
Kindle US:
https://www.amazon.com/dp/B09FL5JDMJ
Kobo US:
https://www.kobo.com/us/en/search?qu...a-9d950bea9b74
Kindle UK:
https://www.amazon.co.uk/dp/B09FL5JDMJ