John Pilkington seems to have gotten the rights back to some of his historical mysteries, and now three of them are on Kindle Countdown for $0/99/£0.99 about three-four more days.
The Ruffler’s Child, Thomas the Falconer #1
Buy at Kindle US | Kindle UK
A Ruinous Wind, Thomas the Falconer #2
Buy at Kindle US | Kindle UK
Marbeck and the Privateers, Martin Marbeck #3
Buy at Kindle US | Kindle UK