The Quiche of Death is the first in the Agatha Raisin series by the incredibly prolific M. C. Beaton. It has dropped to $2.99 as the US Nook daily deal, matched at Kindle and Kobo US. I think $2.99 is high for a very old first-in-series, which IMO should practically be given away to get folks to start the series, but still, this title doesn't drop in price very often, so...
It has been on sale a couple of times in various omnibuses (at least one in the US and one in the UK), so check carefully before you buy.
Nook US:
https://www.barnesandnoble.com/w/qui...781429901536#/
Kindle US:
https://www.amazon.com/Quiche-Death-...dp/B001P7RV54/
Kobo US:
https://www.kobo.com/us/en/ebook/the-quiche-of-death