Presumably as part of Sourcebooks annual-ish Georgette Heyer birthday sale, a whole bunch (all?) of Heyer's romances have dropped to $2.99 or less at Kindle US. I think I've picked pretty much all of them up in past sales, but will need to check this evening when I have some time.
link (also includes a couple of strays):
https://www.amazon.com/gp/search/?se...node=158566011