One of the titles in Carolyn Hart's Death on Demand series,
Engaged to Die, recently dropped to $1.99 at Kindle and Kobo US. However, while I was checking it out, I noticed that a bunch of other Hart titles seem to be semi-permanently in the $0.99 to $2.99 range. These are mostly later titles, but I do remember some of Hart's early books with fondness from DTB days, so may try another title or two.
These links pull up twelve Carolyn Hart titles, across her three main series, in the $0.99 to $2.99 range...
Kindle US:
https://www.amazon.com/gp/search/?se...eyword=-basket
Kobo US:
https://www.kobo.com/us/en/search?Qu...cmaxprice=2.99