Both titles in the Kitty Peck series by Kate Griffin are combined in an omnibus that is $1.99 at Kobo US (coupon/VIPable) and $1.49 at Kindle US.
Kitty Peck and the Music Hall Murders and
Kitty Peck and the Child of Ill-Fortune omnibus:
Kindle US:
https://www.amazon.com/Kitty-Peck-My...dp/B01M8G7QL2/
Kobo US:
https://www.kobo.com/us/en/ebook/the...peck-mysteries