A big bunch of titles (maybe a third of them?) in Steven F Havill’s Posadas County series have dropped in the US to $2.99, and a few to $1.99. And they are discountable at Kobo US. As I’ve mentioned elsewhere, I really like this police procedural series for its enjoyable plots, its nicely developed characters, and its wonderful New Mexico settings.
There are too many on sale to list individually, but here are series web page links…