Just noticed a "Series Bundle deals" link under the "More Summer Deals" heading on Kindle US Book Deal page. (It may have been there a while...I just noticed it.) The savings can be pretty significant: three titles for $2.40, three titles for $2.67, four titles for $1.75, etc. Many (all?) appear to be Amazon-published.
In mysteries, there are bundles by the following authors:
- Mary Burton
- Blake Crouch
- Anne Frasier
- Melinda Leigh
- Elisabeth Naughton
- Meg Elison
- Mark Dawson
- Marti Green
- Steven Konkoly
- JD Horn
- Melissa F Olson
- Karen McInerney
- David L Robbins
- Martin Jensen (I highly highly recommend this series if you like historical mysteries, and am distraught that Amazon has only had three translated into English. The only reason not to read these three is the disappointment you'll have at all the untranslated titles you won't get to read, unless, of course, you happen to read Danish...)
- Christine Kling
- Orest Stelmach
- Jessie Humphries
- Alan McDermott
- Chris Patchell
- J Carson Black
- Louise Voss and Mark Edwards
- Alexander Hartung
- EM Powell
- Tara Brown
- Jutta Profijt
- Darren and Marcus Wearmouth
- Eyre Price
- Shaun Morey
- JA Konrath and Ann Voss Peterson
This link is horrible but doesn't seem to have any affiliate tags in it:
https://www.amazon.com/s/ref=s9_acsd..._i=14275597011