A bunch of books in the Jack Daniels (Lt Jacqueline “Jack” Daniels) series by JA Konrath are free right now, including the first two, and a bunch more are available for $0.99 each at Kindle US. The first few books in the series were conventionally published, and per SYKM, the first book, Whiskey Sour, was a finalist for the 2005 Anthony and 2005 Macavity awards for best first novel. And the fourth book, Dirty Martini (yes, there is a theme here) was a finalist for the 2008 Barry award for best novel. At some point though, the author started self-publishing, so YMMV. But if you want to give the series a try, it’s inexpensive/free to do so right now. And the books are all in KU if you have that…
Link to the series webpage: Kindle US