Kindle US is having a “Popular Fiction e-Books for $3.99 or Less” sale good through 11 April 2021 at 11:59 pm Pacific (US West Coast) time. The mystery sale page that is part of this sale has 74 books listed, and includes books by:
Agatha Christie
Ellery Adams
Joanne Fluke (lots)
Ward Larsen
Robert Crais
Margaret Mizushima
TE Kinsey
PJ Tracy
Carlene O’Connor
Anna Lee Huber
Charles Todd
Derek B Miller
China Mieville
Lisa Jackson
Fern Michaels (lots of Sisterhood)
This is just a list of authors that I recognize, and not necessarily authors I particularly do or don’t recommend. And there are a bunch more, so if you don’t see your favorite author in the list, you may still want to check it out. Mostly there are just a few titles (even just one) for each author, although some have a lot. And although the banner ad says $3.99 and under, I’d say most are either $1.99 or $2.99, which are decent prices IMO.
You can find the sale page here.