Twenty-two (22!) titles across Barbara Nadel's various series (mostly Inspector Ikmen) have dropped to between $0.99 and $2.99 at Kindle and Kobo US. Although not in my top ten series like Rowe's Libertus series above, I really like Nadel's books too - I also started reading them back in my "business trips to the UK/pick up paperbacks not available in the US" days. I am still in a crunch at work

, but again, here are bulk links:
Kindle US:
https://www.amazon.com/gp/search/?ta...price-asc-rank
Kobo US:
https://www.kobo.com/us/en/search?Qu...cmaxprice=2.99